| Subject | Date Asked |
|
| what is this worm? | 11/17/2009 |
Q: I've found this in the garden soil (actually, i was looking for antlion). they are about 10 mm long. ...
A: It's hard for me to tell from the picture, but if there are six legs very near the front of the ...
|
| Oily skin | 11/15/2009 |
Q: Hi i want to ask you about oily skin that sometimes our skin becomes oily specially nose area which ...
A: Mammals all have oil glands that keep the skin lubricated and supple. It may seem excessive at ...
|
| Chicken breast worms | 11/10/2009 |
Q: Dana, Yesterday my folks bought two barbeque chickens from the local supermarket we ate one, and ...
A: There are other nematode species in which the male and female exist in a constant state of coitus, ...
|
| pregnancy | 11/10/2009 |
Q: my period started today so which day will i ovulate?
A: Every woman's cycles are a little bit different. But on the average, ovulation occurs approximately ...
|
| genes | 11/5/2009 |
Q: 1- Do the genetic factore have any affects on prtection from A.I.D.s (H.i.v) illness ? 2- do the ...
A: 1 - Yes, very likely. Although most people are susceptible to infection by HIV, there are a few ...
|
| eye colour genetics | 11/4/2009 |
Q: I have a question about eye colour. I have blue eyes but my father has brown eyes and my mother has ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| knee problems in Zulu people | 11/3/2009 |
Q: i was wondering if you could point me in a direction or help me out with your knowledge,we were ...
A: Environment and genetics both play a role in the reslience of any body part to injury. But I am not ...
|
| Diabetes | 11/3/2009 |
Q: How Is Diabetes related to Biology?
A: Diabetes is a disorder in which the body does not properly process sugar, and it can manifest in ...
|
| Length of time until new genetic mutations reveal themselves | 11/1/2009 |
Q: how long does it take for new/unique genetic expressions to reveal themselves in populations of ...
A: That depends on the mutation. A dominant allele can manifest in the first generation, even if it's ...
|
| Viable offspring from transgenic organisms | 10/31/2009 |
Q: I would like to ask whether transgenic organisms (plants or animals) created in the lab usually ...
A: Most transgenic organisms created in the laboratory are perfectly capable of reproducing. The ...
|
| Hooves | 10/29/2009 |
Q: How do hooves grow and how does the environment effect on the sizes of the hooves? Thanks
A: Hooves are homologous to our fingernails (they develop from the same embryonic sources in the ...
|
| Blonde Asians | 10/27/2009 |
Q: I was wondering how myself and some (4 of 8) siblings ended up with natural blonde hair when our ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| My grandchild's hair and eye color? | 10/26/2009 |
Q: My daughter-in-law's eye color is green with light brown/blond hair. My son has blue eyes and red ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| question about mutation | 10/24/2009 |
Q: Good morning There is a great question which confuses us in schools about reasons of multion ( ...
A: I believe you are referring to mutation, any change in the DNA that encodes the instructions for ...
|
| SLEEPING!! | 10/23/2009 |
Q: I WANT TO ASK WHY DO WE AUTOMATICALLY FEEL SLEEPY IN THE NIGHT?? IF WE SLEEP ALL THE DAY YET WE FELL ...
A: Almost all living organisms experience what's known as Circadian rhythms. These are natural cycles ...
|
| Biology- Genetics | 10/23/2009 |
Q: I am curious to know what colour hair our baby will have My gradnfather (mums dad) was a red head. ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Bee vision colour yellow | 10/23/2009 |
Q: I have read that bees can see blue and ultraviolet but not red, which probably appears as black to ...
A: Ah, sorry I misunderstood your question. The arthropod eye is completely different from that of a ...
|
| Baby's hair color | 10/21/2009 |
Q: Krempels I am curious as to what color hair my baby may possibly have. I have medium blonde hair ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Bee vision colour yellow | 10/21/2009 |
Q: I have read that bees can see blue and ultraviolet but not red, which probably appears as black to ...
A: Because color is a psychophysical phenomenon, we cannot really predict how bees perceive what we ...
|
| Height | 10/19/2009 |
Q: 5
A: Human growth hormone is produced by the pituitary gland. You can read more here: ...
|
| When is a moustache not a moustache? | 10/18/2009 |
Q: Q1- i want to ask that our mustache is grown under our nose why not on our cheek or on some where ...
A: Your question really is about evolution, and why our species facial hair trait is the way it is. ...
|
| When is a moustache not a moustache? | 10/15/2009 |
Q: Q1- i want to ask that our mustache is grown under our nose why not on our cheek or on some where ...
A: The "moustache" is called the moustache *because* it grows under the nose. That's the name that ...
|
| baby | 10/14/2009 |
Q: my moms side of the family all have dark hair and dark eyes my fathers side half half dark hair and ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| genetic code | 10/13/2009 |
Q: How could genetic code evolve as a results of random mutations (ie errors) and the other mechanism ...
A: I must answer this question by saying: No one truly understands the answer to this question yet. ...
|
| Hair, skin and eye color genetics | 10/12/2009 |
Q: two questions. 1.) can a child end up with blonde hair and blue eyes if it does not show up in ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Bean plants | 10/11/2009 |
Q: I'm doing a science project on bean plants and their growth and I was wondering How much sunlight ...
A: Bean plants can probably grow well on 12 hours of sunlight a day, but may be able to do with less. ...
|
| reassortment of viruses | 10/8/2009 |
Q: I've been reading up a bit about viruses and reassortment of virus subtypes. Something occurred to ...
A: This could be a concern if the vaccine is the same virus, but attenuated (i.e., weakened), or if ...
|
| Biology - Osmosis | 10/8/2009 |
Q: Your Question was: If I fill three pieces of dialysis tubing with a 10% sugar solution, a 30% sugar ...
A: Sorry for the misunderstanding. I get so many school kids asking me to do their homework that I ...
|
| cells and endoderm and ectoderm, oh my! | 10/7/2009 |
Q: wondering if you could settle this for me please. A cell consist of 3 layers the ectoderm, mesoderm ...
A: Any embryonic organism is directed in its growth and development by the instructions encoded in its ...
|
| Origin of sexual reproduction | 10/6/2009 |
Q: Even after reading some resources on the Net (eg Wikipedia), I still struggle to understand any ...
A: In answer to your questions... 1) As regards the isogametic species: can "=" and "+" be also seen ...
|
| hair colour | 10/5/2009 |
Q: I have brown hair and brown eyes my girlfriend has red hair and blue eyes what colour hair and eyes ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| cells and endoderm and ectoderm, oh my! | 10/5/2009 |
Q: wondering if you could settle this for me please. A cell consist of 3 layers the ectoderm, mesoderm ...
A: A cell does not consist of endoderm, ectoderm and mesoderm. Those three tissues are embryonic "germ ...
|
| Biology question: Disease-causing proteins? | 10/4/2009 |
Q: What are some proteins that cause diseases, and how do they cause the disease
A: I won't do all your project work for you. :) But I will give you a hint: the most famous proteins ...
|
| Stickleback evolution | 10/3/2009 |
Q: Can you tell me how molecular information is used to determine which of the stickleback types were ...
A: Molecular information can be of various types, from protein sequence data to DNA or RNA sequence ...
|
| Origin of sexual reproduction | 10/3/2009 |
Q: Even after reading some resources on the Net (eg Wikipedia), I still struggle to understand any ...
A: You are treading in oft-traveled waters when you try to understand the origin and maintenance of ...
|
| cell division: where do nucleotides come from? | 10/1/2009 |
Q: Dr. Krempels As you suggested I am resubmitting my question. "When a human cell divides, all the ...
A: You can see a nice movie of the process of DNA replication here: ...
|
| diffusion/osmosis | 10/1/2009 |
Q: An experiment was conducted to observe diffusion in selectively permeable membranes and I was asked ...
A: Because phenolpthalein turns pink in a basic solution, it will tell you whether the NaOh has crossed ...
|
| Grad School or No? | 9/30/2009 |
Q: I graduated a few years ago with my BS in Biological Sciences. Despite taking a few years off after ...
A: While the job market isn't great these days, there are still many options for employment, especially ...
|
| human cell division | 9/30/2009 |
Q: Dr. Kremples The question I sent about the source of molecules for human cell division was not a ...
A: I am sorry I misunderstood where your question was coming from! :) I get so many questions this ...
|
| Hair and eye color inheritance | 9/27/2009 |
Q: I've got brown eyes and chestnut coloured hair, my mum has green eyes and black hair, my dad has ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Black Coyotes | 9/20/2009 |
Q: As I am almost 63 years old, I can assure you this is not for my homework. The question is: do ...
A: While there's a possibility the coyotes in the area have hybridized with local dogs, coyotes in ...
|
| C3 and C4 photosynthesis cycle | 9/20/2009 |
Q: what is the main difference between c4 and c3 plants? how one plant's photosynthetic cycle can be ...
A: I can't do your homework for you. But I can refer you to my botany lecture notes that I hope will ...
|
| Biology Careers | 9/20/2009 |
Q: I was considering becoming a biologist when I graduate. What kind of career options are open in ...
A: The field of biology is now so vast that there are endless career opportunities, and the road you ...
|
| 4-yr old grandson: cystic fibrosis? | 9/19/2009 |
Q: My 4-yr old grandson has had 5 bouts of pneumonia in 2yrs; Dr suggests testing (genetic) for Crohns ...
A: Cystic fibrosis is due to a mutation in the CFTR ("cystic fibrosis transmembrane conductance ...
|
| Osmosis | 9/16/2009 |
Q: Hey, I did an experiment on Osmosis/Diffusion for my course and although I understand osmosis and ...
A: Now you know I don't do homework. But you should know that the water potential is lower in the ...
|
| Osmosis | 9/13/2009 |
Q: Hey, I did an experiment on Osmosis/Diffusion for my course and although I understand osmosis and ...
A: Yes, you might expect to have more dramatic results, but it's possible that the difference in ...
|
| Babies' Skin color | 9/8/2009 |
Q: I am black and my white boyfriend is concerned that if we have children they will not resemble him. ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Worms - I think | 9/7/2009 |
Q: I hope this question finds you well and happy. I have a leak in a bathroom. It has not been fixed ...
A: What you describe sounds like mosquito larvae, though I can't positively identify them without ...
|
| general concept of cloning. | 9/7/2009 |
Q: I had a look at you description and it looks like you will certainly be able to help with my ...
A: In answer to your questions: 1. does cloning require DNA or samples from both male and female or ...
|
| eye color | 9/4/2009 |
Q: my parents have blue and green eyes my brother has blue and my sister has grey ish green....but ...
A: Even if a version of a gene is dominant, its phenotypic expression may not be the most common on in ...
|
| eye color | 9/3/2009 |
Q: my parents have blue and green eyes my brother has blue and my sister has grey ish green....but ...
A: Eye color in humans is controlled by several different genes, and unexpected eye colors can occur, ...
|
| about career in evolutionary biology | 7/22/2009 |
Q: can you please tell me that whether it is possible to research in evolutionary biology or ...
A: Yes, it is possible. You first need to identify universities/institutions that have faculty doing ...
|
| MOLD!!!!! D: | 7/22/2009 |
Q: Help! I'm doing an experiment and i know that mold does grow faster on bread soaked in sugar ...
A: I'm not going to write your homework for you. But I'll give you a hint about the answer. All living ...
|
| A career in water, air, hazardous waste treatment, disease | 7/21/2009 |
Q: does biology help in learning how to clean water, air? i cant decide between molecular biology, and ...
A: Cleaning up the environment requires contributions from many fields of science, including biology ...
|
| Ear Genetics | 7/21/2009 |
Q: I have attached ear lobes and my husband has free earlobes, my son also has free ear lobes! My ...
A: There seems to be something wrong with the AllExperts site. I answered this question a couple of ...
|
| genetics-curly haired baby, straight h. parents | 7/20/2009 |
Q: Back in HS my science teacher told us that straight hair was recessive, so I told my husband that we ...
A: It would be very unusual for two parents with very, very straight hair to have a curly-haired child, ...
|
| Life after a biology degree | 7/14/2009 |
Q: my name is Matthew Burns and i am soon to be graduate in spring 2010 with a bachelors in the school ...
A: The key to getting into graduate school is to score well on the Graduate Record Exam (GRE) and to ...
|
| Evolution tutorial web site: concept map | 7/12/2009 |
Q: Hai, do you know any "mind map"/"spider map"/"concept map" website for biology & evolution subject ...
A: I don't know of any concept map web sites, but I can direct you to an absolutely *excellent* ...
|
| How are mitochondria inherited? | 7/8/2009 |
Q: I understand that mitochondria are independent organisms living within our cells. They are not ...
A: All current evidence suggests that mitochondria evolved from early prokaryotic organisms that took ...
|
| Daughter's eye color | 7/7/2009 |
Q: I am mixed with afghan and polish. My babies father is mixed with black, german a small percentage ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| transcription: where is the promoter? | 7/1/2009 |
Q: where the promoter is located ?? is it on the template strand or the coding strand ? by logic it is ...
A: The promoter is where the RNA polymerase attaches to begin transcription of a gene. Therefore, it ...
|
| blood from body | 6/10/2009 |
Q: In my fictional story, I wanted a body to be found where it had been completely drained of blood (by ...
A: I'm not sure you have to abandon your idea of completely draining the body of blood. After all, ...
|
| Physical resemblance of a child to one parent or the other | 6/10/2009 |
Q: I heard from a friend that there is a tribe in Africa whose people believe that the main physical ...
A: Your friends hypothesis is creative, but it is not correct. A baby's traits are determined by a ...
|
| Biology/Marine Biology | 5/25/2009 |
Q: Can i just major in biology and then go to graduate school for marine biology? i would like to go to ...
A: Since I work at the University of Miami, I do know that RSMAS does require that its entering ...
|
| Codominant vs. Incompletely dominant alleles of a gene | 5/25/2009 |
Q: Is there a such thing as a trait that is not dominant but not recessive? Would this person be ...
A: There are some alleles of genes that are neither dominant nor recessive. These can be codominant or ...
|
| Blood brain barrier | 5/20/2009 |
Q: Today in my psych class we discussed the blood brain barrier. We were told the blood is toxic to the ...
A: To say that blood is "toxic" to the brain is a gross oversimplification. There are substances ...
|
| twin eye color | 5/19/2009 |
Q: I saw the preview of a movie where a doctor commented that he knew the girl had a twin by the color ...
A: I didn't see the movie preview, so don't know exactly what the doctor was talking about. But the ...
|
| generations of brown eyes and poof blue appears | 5/18/2009 |
Q: I can trace 4 generations on paternal side and 5 on maternal side,all with brown eyes and one of our ...
A: In general, blue eyes are considered to be an expression of a trait that's recessive to brown eyes. ...
|
| Baby Eye/Hair Color | 5/14/2009 |
Q: I know that you have responded to this kind of question a hundred times, but I thought about giving ...
A: If you are Hispanic, brown-haired and brown-eyed with no ancestors having light hair or eyes, then ...
|
| blood from body | 5/11/2009 |
Q: Since you are an expert in anatomy, you are right for the question. I am writing a fictional story ...
A: The only outward sign of a complete lack of blood in a human body would be that the skin or any ...
|
| genetics | 5/9/2009 |
Q: My husband and I both have blue eyes. Mine are clear blue and my husband has a couple of "specs" of ...
A: It is possible that either you or your husband is responsible for your son's eyes, in the form of a ...
|
| career advice | 5/8/2009 |
Q: I am 25 and graduated with a 2.1 in biology and geology 3 years ago. I decided I'd had enough of ...
A: If you would like to pursue study in the biolgical sciences, then it may be necessary for you to ...
|
| Name of DNA | 5/8/2009 |
Q: what is the name of DNA in different stages of cellular cycle? Most of the time, chromosomes are ...
A: When a cell is not actively dividing, the chromosomes exist in their loose, functional form, known ...
|
| height shrinkage | 5/4/2009 |
Q: Hey, I'm 19 yrs old & around my birthday when which was a little bit over 3 months ago I had a ...
A: I'm not sure what the tallest height you measured was, because above you've written 6.25" (six and a ...
|
| transcription | 5/3/2009 |
Q: Those are the facts that I am sure of: RNA Pol II reads the template from 3' to 5' Direction. the ...
A: Since I cannot see the diagrams that are confusing you, and because your question is a little bit ...
|
| genetics | 4/7/2009 |
Q: Sir, I would like to know how a character becomes dominant and how it turns recessive.
A: I am not sure exactly what you are asking, but I will do my best to answer and if my response is not ...
|
| Green eyed parents, brown eyed children. | 2/18/2009 |
Q: Both of my parents have green eyes, yet all of their children (4) have brown eyes, not light brown ...
A: Eye color, like hair color and skin color, are controlled not by one, but by several genes each. ...
|
| Please help me, it's for a career research report. | 2/18/2009 |
Q: My teacher told us to interview someone with our chosen career and I really don't know anyone whose ...
A: 1.)What education do you need to be a biologist? You need at least a Bachelor of Science degree in ...
|
| Blond Hair Gene | 2/17/2009 |
Q: I understand basic genetics, however I have a question about how the blond hair gene might show ...
A: The genetic predisposition to produce and deposit melanin is yet another polygenic trait, and to ...
|
| Blond Hair Gene | 2/13/2009 |
Q: I understand basic genetics, however I have a question about how the blond hair gene might show ...
A: Many people who are born with blonde hair see it darken as they get older. This is natural, and is ...
|
| Bacterial Strains | 2/12/2009 |
Q: Ok so this is a homework question but I'm not sure that I've come up with the correct answer. We ...
A: Strains of bacteria are the same species with different genetic traits that allow them to be ...
|
| reproduction: polar body fertilization & development | 2/3/2009 |
Q: I understand that during meiosis in a female produces a secondary oocyte and a polar body. The only ...
A: The answer to this question is still not completely known. Some preliminary studies have been done ...
|
| Shark Scientist | 2/2/2009 |
Q: I want to study sharks but dont know of any good marine biology schools in louisiana, do you know of ...
A: Nichols State University in Louisiana offers both the Bachelor's and Master's degree in Marine ...
|
| my son's hair color | 2/1/2009 |
Q: I have red hair. My mother has red hair. My mothers father has red hair. My father has brown hair. ...
A: The doctors who told you it was impossible for your child to have red hair weren't paying very good ...
|
| Genetics | 1/26/2009 |
Q: My name is Jessica and am getting married in June. My fiance is 1/4 Chinese. I am Danish and ...
A: Not all Asians have epicanthic eyefolds (the fold of skin over the eyelid that gives the eyes their ...
|
| genetics | 1/18/2009 |
Q: I will try to ask this question without confusing the both of us. I am an expectant mother. I have ...
A: Sorry for the delay. We had a wee family crisis, but all is fine now. Human hair, eye, and skin ...
|
| zoologie | 1/17/2009 |
Q: I would like to know what animal is this? I took the picture in november in Burkina Faso. It looks ...
A: This animal is a tadpole, the aquatic larva of a frog, that is very close to metamorphosing into its ...
|
| excessive salt in baby's sweat | 1/15/2009 |
Q: I would like to know if i should take my baby to a doctor, he has a salty sweat and it is there ...
A: I am neither a physician nor a pediatrician. Your question is more medical than simply biological, ...
|
| odd noise when bunny shakes head | 1/14/2009 |
Q: This is a very strange question. At least I think it is ... first some background: I just had a ...
A: If the vet did an ear flush or used swabs to clean out the ears, then the clicking/rattling you hear ...
|
| Watering plants | 1/13/2009 |
Q: If you just used plain water with regular household plants would this create a isotonic enviroment? ...
A: If you use pure water for your plants, it won't immediately create a hypotonic solution because of ...
|
| Biology: Transpiration | 1/12/2009 |
Q: i need some more of your help on this topic which i had today. I did a lad and for my discussion i ...
A: Transpiration is the process by which plants take up water via the roots, transport it through the ...
|
| genotype | 1/9/2009 |
Q: can the genotype of an unborn child be determined?if yes,at what maturity of the pregnancy
A: If you mean the genotype for a particular trait, then whether it can be determined before birth ...
|
| water potential | 1/7/2009 |
Q: can water potential increase on the application of positive pressure and reach a value greater than ...
A: Since the water potential of 100% water is set at zero, the addition of any solutes will decrease ...
|
| Haircolour | 1/4/2009 |
Q: Why is it possible for some people with dark brown hair to have light haired children but not others ...
A: Hair color, like eye and skin color, is controlled by more than one gene. And this makes its ...
|
| Vestigial structures? Wisdom teeth, etc. | 1/3/2009 |
Q: What makes each of these; the appndix, coccyx, muscles that move ears, muscles that make hair, ...
A: None of these are entirely vestigial, though they are not as well-developed in humans as they are in ...
|
| biology | 12/25/2008 |
Q: Why do black people have less melanin in the skin of their palmar and plantar surfaces than ...
A: This is an interesting question, and I don't think anyone can give a definitive answer. Is there an ...
|
| Have Human beings ALWAYS had 46 chromosomes? | 12/25/2008 |
Q: Have Human beings ALWAYS had 46 chromosomes? Even back in the 'cave-man' days (and before then)? ...
A: All members of the species Homo sapiens normally have 46 chromosomes. Because we do not have ...
|
| marine biology. | 12/17/2008 |
Q: I am a senior in high school in LA and I am very interested in going into the Marine Biology field. ...
A: You can email Dr. Gruber directly from his web site. I'm sure he'd be happy to hear from a fellow ...
|
| marine biology. | 12/17/2008 |
Q: I am a senior in high school in LA and I am very interested in going into the Marine Biology field. ...
A: Marine Biology is an excellent major for anyone who would like to work with sharks. The University ...
|
| microorganism | 12/16/2008 |
Q: i just wanted to ask when making organic fertilizer with manure what microorganism is needed to do ...
A: To supply microorganisms (bacteria and fungi) to organic compost/fertilizer, simply rake up fallen ...
|
| Delay puberty | 12/16/2008 |
Q: I'm already 15 bt my voice hasn't deepen.. What could i do?
A: Everyone matures at a different rate, and sometimes a man's voice doesn't change at the usual time. ...
|
| genetics | 12/14/2008 |
Q: My girlfriend and i were wondering what color our childs hair and eyes would most likely be. I have ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| a question about planting trees | 12/13/2008 |
Q: I have a question but cant find an answer anywhere, hope you can help me with this. I am doing an ...
A: Your best bet will probably be large palm trees, which have relatively contained fibrous root ...
|
| math and biology | 12/12/2008 |
Q: ok so i am 15 and in 9th grade.....i suck in alg. and any kind of math.....i've always wanted to ...
A: Even if you're not great at math, you can still get a college degree in biology that will serve you ...
|
| Aluminum foil + wrapping sandwiches | 12/11/2008 |
Q: I was just wondering if its safe to wrap a PBJ in reynolds aluminum wrap. I thought it was odd and ...
A: The jury is still out on whether ingested aluminum has anything to do with Alzheimer's and other ...
|
| Oxygen consumption | 12/10/2008 |
Q: How is it possible to measure oxygen consumption in geminating Seeds? is there a specific piece of ...
A: There are many different ways to measure this, but the simplest is with a respirometer. ...
|
| immunity, vitamin C and filaria | 12/8/2008 |
Q: there are people who eat enough fruits which provides vitamin c (7fruits) but still show serious ...
A: Filariasis is the term used to describe an infestation by parasitic nematodes (roundworms, or ...
|
| Comb types in Gamefowl breeding | 12/7/2008 |
Q: I know you can get single Bankiva Type combs when breeding peacombed oriental type fowl if there is ...
A: The wild type, single comb in jungle fowl (aka, chickens) is encoded by a recessive allele, and so ...
|
| Biology/Genetics | 12/7/2008 |
Q: I am studying for my final and am confused about how to perform two and three point crosses. I do ...
A: This is far too complicated for a single email, and really is in the realm of "please come sit in on ...
|
| fat | 12/7/2008 |
Q: does someone who is physically fat really have too much fat in his body.why do some people who do ...
A: Muscle mass actually weighs more than fat mass, so a body builder might be very heavy but have very ...
|
| Dinosaurs | 12/7/2008 |
Q: What scientific evidence is there that raptor dinosaurs had hollow bones, other than the assumption ...
A: J. Fossilization is a slow process, and it involves the replacement of tissue with minerals over a ...
|
| Marine Biology | 12/4/2008 |
Q: My name is Jordan and I'm a senior in high school. I am in love with animals, especially marine life ...
A: The field of Marine Science and Marine Biology is diverse and full of fascinating opportunities for ...
|
| eye color | 12/3/2008 |
Q: I have hazel eyes and my husband has blue eyes. Is it possible for us to have a brown eyed child?
A: In general, the genes that code for a light-colored iris (e.g., blue or hazel) are recessive to ...
|
| agar for horticulture | 11/16/2008 |
Q: relative inexpensive (even homemade) agar for horticulture classes in propagation
A: Here's a basic recipe for an agar medium that can be used to grow meristems and otherwise propagate ...
|
| cell regeneration and immortality | 11/1/2008 |
Q: The theory of evolution is still argued about today. But if humans were to be able to regenerate ...
A: The causes of aging are an active area of scientific research, and there is no answer yet about what ...
|
| Genetics | 10/31/2008 |
Q: I have been stumped on this genetic thing for a while. I've been pretty sure of who the father is to ...
A: If both you and the putative father have any European genes that include genes coding for lighter ...
|
| Banana sections | 10/30/2008 |
Q: A banana has how many sections? (If you push your finger into one end of a banana and push you will ...
A: The fruit of a banana is an accessory fruit (meaning that part of the flower tube contributes to the ...
|
| Genetics of hair and eye color | 10/30/2008 |
Q: I was wondering if you could answer me a question please? Basically Im a redheaded woman with green ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| Hardy‐Weinberg equilibrium | 10/30/2008 |
Q: I cannot get this question for the life of me!! In a population of crickets that is in ...
A: This is a pretty straightforward HW calculation. I can't do your homework for you, but I can give ...
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| lettuce seed germination | 10/28/2008 |
Q: how does tomato juice affect lettuce seed germination...i know that it inhibits germination but what ...
A: Tomato juice is somewhat acidic, and this could affect germination rate. However, tomatoes also ...
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| Genetics - Mapping Several Genes on a Single Chromosome | 10/28/2008 |
Q: So.. Im doing a virtual fly lab, and I've found all mapping distances of several genes relative to ...
A: From your description, I'm not sure you're considering the difference between actual and measured ...
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| feeding | 10/25/2008 |
Q: I learned recently that there are natural chemicals in foods that effect whether organisms want to ...
A: Wow, that's a great question! Many people have different "taste" when it comes to foods, and it ...
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| sun exposer | 10/24/2008 |
Q: what would happen if someone was never exposed to the sun?
A: If you mean a human, then that person would have serious problems with skeletal health, as the body ...
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| Color Blindness | 10/24/2008 |
Q: My sister-in-law is pregnant and going to have a boy. Her father is completely colorblind. I don't ...
A: Your sister-in-law's father suffers from a very rare condition known as monochromacy, or complete ...
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| question about baby's skin color | 10/22/2008 |
Q: me and my boyfriend are white but my boyfriends father is black. what colour baby will we have
A: Inheritance of skin color in humans is controlled by approximately ten different genes. The more ...
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| biology | 10/20/2008 |
Q: what does it mean by "relate cells to each level of organization in a multicellular organism"
A: The various levels of organization in a living thing above the cellular level are (1) tissue (simple ...
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| human health | 10/18/2008 |
Q: . i need to write about a few enviromental factors which affect human health.. so far iv done air ...
A: How about... Loss of biodiversity (loss of wild species affects us in many ways!) Loss of ...
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| Synaptc cleft? | 10/17/2008 |
Q: (Note: okay, I realize that this is a weird question, but it has been bothering me for a while...) ...
A: You're correct! It's fluid, and when there's not an impulse being transmitted, it's isotonic with ...
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| protein supplements | 10/15/2008 |
Q: I am 37 year old male trying to get in shape and put on some muscle. I am not planning on being pro ...
A: While it's important to have sufficient dietary intake of protein if you're trying to build muscle ...
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| Baby hair color | 10/14/2008 |
Q: My husband and I both have red hair and brown eyes. His hair is darker than mine, but he has bright ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| Siamese Fighting Fish | 10/13/2008 |
Q: I have a question about the taxonomy and genetics of the Betta genus of fish, aka 'Siamese Fighting ...
A: Sorry for overlooking the subspecies question. A "subspecies" is a bit like a "race" of a ...
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| lytic vs. lysogenic reproduction in viruses | 10/12/2008 |
Q: what is lytic cycle and lysogenic cycle
A: I can't do your homework for you, but I can direct you to a few web sites that will help you answer ...
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| biology | 10/12/2008 |
Q: I can't understand how Thomas Malthus and Charles Lyell influenced Charles Darwin and contributed to ...
A: Thomas Malthus wrote a famous essay in which he linked war, disease and lack of food/resources to ...
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| ENVIROMENTAL FACTORS | 10/11/2008 |
Q: . I NEEDD YOR HELP TO EXPLAIN HOW ENVIROMENTAL FACTORS CAN AFFECT HUMAN HEALTH.. WHAT AM I SUPPOSE ...
A: I can't do your homework for you, but I can give you some hints. First, consider some of the ...
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| Siamese Fighting Fish | 10/11/2008 |
Q: I have a question about the taxonomy and genetics of the Betta genus of fish, aka 'Siamese Fighting ...
A: I'll take each question in turn: "With the way evolution and natural selection etc. works, if left ...
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| Guinea Pig Genetics | 10/11/2008 |
Q: Is there any way I can get a list of the traits of guinea pigs, with the recessive and dominant ...
A: I'm not an expert on guinea pigs (though I'm okay with the genetics part ;) ), but here are a few ...
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| Cell regeneration | 10/10/2008 |
Q: I remember reading several years ago about a research being done on cell life and regeneration. I ...
A: What the article was probably referring to was the telomeres: the "caps" on either end of the ...
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| Siamese Fighting Fish | 10/7/2008 |
Q: I have a question about the taxonomy and genetics of the Betta genus of fish, aka 'Siamese Fighting ...
A: There are several different definitions of "species." The one you cite is the biological species ...
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| Nondisjunction | 10/6/2008 |
Q: Really i don't need to understand the term so much as what happens to the male XY chromosomes during ...
A: The diagram you've drawn isn't quite correct. Remember that before meiosis (or mitosis), each ...
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| Botany | 10/6/2008 |
Q: or atleast im working on it--this is my first year in college. anyway im about to have my biology ...
A: I can't do homework problems for you, but I can give you some big hints. Organic nutrients are ...
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| biology | 10/4/2008 |
Q: I can't understand the various sources of genetic variation and how they arise, also how does ...
A: Physical traits are largely encoded by strands of a macromolecule called DNA. It is a long "string ...
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| translation of DNA | 10/3/2008 |
Q: I have a question on peptide sequence and translation . How many possible peptide sequences can be ...
A: To know how many amino acids could be encoded in the segment you show in your post, you must know ...
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| Genetics/DNA/Lookalikes | 10/2/2008 |
Q: I wanted to ask you if it's possible for two people of two different ethnic groups to look the same ...
A: Yes, it's possible for people with different genetic makeup to bear a superficial resemblance to one ...
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| Cells | 10/1/2008 |
Q: When a cell is deprived of oxygen for a extended amount of time is there ever a time when the cell ...
A: It depends on the type of cell. There are some anaerobic bacteria that will die if exposed to ...
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| Genes | 10/1/2008 |
Q: I understand that people want to know their family history but why is it so important to study ...
A: Most people would agree that it would be morally wrong to abort a child simply because there is a ...
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| Light and human eye | 9/30/2008 |
Q: I would like to know 1) What are the spectrum's of light that the human eye cannot see? 2) What are ...
A: The human eye is sensitive to wavelengths between about 380nm (violet) and 750nm (red). Anything ...
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| Human Existence and Population Growth | 9/29/2008 |
Q: why does the population grow slowly for most of human existence....???
A: Humans, like any other animals, have a great deal of mortality from pathogens, lack of food, ...
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| Kick Start | 9/28/2008 |
Q: I am one of those poor souls who will remark "I used to want to be a biologist, or marine biologist ...
A: At the age of 28 you're certainly not old, and it's never too late to get a degree that will help ...
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| Genetics, Widows Peak | 9/25/2008 |
Q: Is it possible for two parents with definite continuous hairline to have a child with a widow's ...
A: The allele coding for "Widow's Peak" is considered dominant to the one coding for a straight ...
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| adv. biology and ecology | 9/24/2008 |
Q: ok so in my advanced biology class we had to make our own lab with yeast and i choose to test ...
A: Since this is a school project, I cannot answer it for you. But I can give you some hints. ...
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| Biology-nematodes | 9/23/2008 |
Q: I am seven years old. I would like to know if worms can live inside worms.
A: Nematodes (commonly called "roundworms") are the most numerous organisms on earth. It's been said ...
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| Autosomal disorders | 9/21/2008 |
Q: my questions are about some autosomal disorders. First of all, I can't understand why do autosomal ...
A: 1) How will a recessive disorder come up? Dominant ones show up because the affected person is ...
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| Autosomal disorders | 9/20/2008 |
Q: my questions are about some autosomal disorders. First of all, I can't understand why do autosomal ...
A: I think the main reason you're confused about this phenomenon is that you are not clear on the ...
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| baby's hair and eye color | 9/13/2008 |
Q: i have strawberry blond hair and brown eyes. my boyfriend has brown hair and blue eyes. what color ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| Evolution and cancer | 9/13/2008 |
Q: Krempels, I know mammals can have cancer, but I don't know if simpler animals, unicellular ...
A: C., Mammals are not the only animals that get cancer. In fact, any vertebrate (except sharks--they ...
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| Galls | 9/11/2008 |
Q: I hope you can help me, I noticed you have answerd questions on galls before and I have found your ...
A: The stains on your walks are not being caused by anything the galls themselves, secrete, but rather ...
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| Evolution | 9/9/2008 |
Q: How did animal and/or plant life develop in lakes that have no access to rivers or oceans - such as ...
A: There are some closed bodies of water that don't have much in the way of large flora and fauna. But ...
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| human body temp | 9/8/2008 |
Q: i am 55 years old and i live in ohio. i have wondered for many years, why do i feel cold in the ...
A: That's an interesting question. One possibility, of course, is that your house is actually cooler ...
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| how to increase health | 8/31/2008 |
Q: i want to ask you that im 21 years old and i have a bad habbit of masturbation i tried to quit but ...
A: Okay, I'm going to just assume this is a serious question and give it a serious answer. 1. ...
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| Intermitten soft stool | 8/30/2008 |
Q: Rescued rabbit Ling Ling, Female dwarf 2.5lbs dislocated vertebrae at the end of the rib cage. Rear ...
A: Wow, Ling Ling is lucky to have such a caring, devoted "dad." You've probably already seen this, ...
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| a title for our investigatory project involving bacteria | 8/28/2008 |
Q: I'm kris and im a 2nd year highschool and i just want to ask your help. I cannot come up with a ...
A: Sorry for the delay in answering. This question was in the Question Pool, where another expert had ...
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| Acorns | 8/26/2008 |
Q: Please see Photo. Could you please tell me what type of Oak Tree Disease would cause this type of ...
A: Looks like Acorn Knopper Gall. This is caused by the gall wasp Andricus quercuscalicis. You can ...
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| Red hair questions | 8/25/2008 |
Q: I'm curious about something. First of all, I am a fan of red hair. I just think it is so pretty. ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| orgasms and athletic ability | 8/25/2008 |
Q: I don't mean to be rude but can you please tell me if it is true that when men ejaculate and release ...
A: That's not a rude question. It's perfectly valid, and many people have wondered about this. It's ...
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| Does every human has different rod and cones? | 8/21/2008 |
Q: Sorry I don't mean to ask the same question again, but I have been told our cones and rod vary, ...
A: It would not be unreasonable to suspect that we perceive color the same way (and other stimuli, for ...
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| sleep | 8/20/2008 |
Q: Krempels, Infants and senior citizens aside, what stops people from falling out of bed more ...
A: The short answer is that during sleep, the neurotransmitter activity of the body changes so that ...
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| Eating Habits and genetics | 8/19/2008 |
Q: I have a one month old daughter who, according to her doctor, should be eating 2-3 oz milk every 3-4 ...
A: Unfortunately, no one really yet knows how much of eating behavior is nature (genetic) and how much ...
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| Does every human has different rod and cones? | 8/18/2008 |
Q: Sorry I don't mean to ask the same question again, but I have been told our cones and rod vary, ...
A: I will code questions I have answered before as "see previous answers." However, you do have a few ...
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| Pregnant Dog | 8/17/2008 |
Q: My pregnant chihuahua just started producing milk. How much longer until the puppies are born
A: Dog gestation normally lasts 63 days, so if you know when she was bred, you should count from there. ...
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| Will I have a blue-eyed/green-eyed children? | 8/17/2008 |
Q: I am a pure Filipino guy. I have dark brown eyes. I'm 22 years old and plans of marrying a white ...
A: If you have no history of blue or green eyes (or any pale color) in your family, then it is very ...
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| blood type | 8/16/2008 |
Q: My friend (female) has AB blood type and her ex (male) has O+ blood type. Could it be possible that ...
A: The ABo blood groups are so named for a specific protein (an immunoglobin protein) embedded in the ...
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| amnio result to test DNA for parentage when the baby is not availableh | 8/14/2008 |
Q: I would like to find out if this is possible. The baby is out of the country now. However, the ...
A: Whether the data from the amniocentesis can be used to establish parentage or not depends on what ...
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| cells | 8/3/2008 |
Q: I was told the other day that in three months my body will have replaced every cell in my body,n ...
A: Not all cells replace themselves. The cells of the nervous system, for example, are notorious for ...
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| Does every human has different rod and cones? | 8/1/2008 |
Q: Sorry I don't mean to ask the same question again, but I have been told our cones and rod vary, ...
A: You really are asking just about the same question again and again, and I really can't do anything ...
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| EYE COLOR | 7/30/2008 |
Q: I HAVE DARK BROWN EYES AND MY HUSBAND HAS LIGHT BROWN EYES SO WHAT COLOR ARE OUR BABYS' EYES GOING ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| Do human have the same biochemical system in our body? | 7/29/2008 |
Q: -Do human have the same biochemical system in our body, that we produce the same signal,flavour and ...
A: The answers to the questions you ask here are exactly the same as the ones you asked about vision ...
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| experiments | 7/29/2008 |
Q: Science is my favorite subject in school especially biology and chemistry. I was wondering if you ...
A: Wherever there is scientific research in any area, you are likely to find experiments that didn't ...
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| leeches? found on a bunny | 7/28/2008 |
Q: I found what I think is a leech on the neck of a rabbit it is about 1 to 1.5 inches long and as big ...
A: Unless you live near a very wet area, it is really unlikely that this is a leech. Leeches also do ...
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| worms | 7/27/2008 |
Q: I found a thin maggot-like worm embedded in a chicken breast at a local eatery...what kind of ...
A: Without seeing it in person, I can't make a positive identification. It's *possible* it was a ...
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| white cat that is sterile | 7/27/2008 |
Q: i was wondering how often a cat is born sterile?i have tried to find info on the internet but havent ...
A: It's not common that a cat is born sterile (the thousands of unwanted kittens born every year are ...
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| Strep throat | 7/24/2008 |
Q: How long can the strep bacteria live on an enviromental surface in a home such as a countertop, ...
A: Some species of Streptococcus can survive indefinitely in the environment. If you suspect there are ...
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| Vestigial: Responding to Yet Another Creationist with an Agenda. | 7/23/2008 |
Q: Is it true that the human tailbone is vestigial? Are there any other parts that are vestigial? ...
A: If you are truly interested in learning about the evidence for evolution, then please go here for an ...
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| bacteria | 7/23/2008 |
Q: what bacteria are found in a dogs mouth? thanks.
A: Here's the abstract from a paper on this very subject: Cultivable Oral Microbiota of Domestic Dogs ...
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| Vestigial | 7/23/2008 |
Q: Is it true that the human tailbone is vestigial? Are there any other parts that are vestigial? ...
A: Evolution is not a religion. It is an observable phenomenon that we can witness happening today. ...
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| Vestigial | 7/21/2008 |
Q: Is it true that the human tailbone is vestigial? Are there any other parts that are vestigial?
A: A structure that is "vestigial" is simply one that had a use in an ancestral species, but is no ...
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| weight of hard boiled eggs | 7/21/2008 |
Q: I am the coordinator of a food pantry and have a chance to get 25 lb bucket of hard boiled eggs. ...
A: Chicken eggs can weigh between 15 (wee) and 30 ounces (jumbo), so the number of eggs you will get in ...
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| aging linked with dna rupture due to free radicals? | 7/20/2008 |
Q: I would like to know the impact of free radicals on the body(DNA) and the link it has to aging. Also ...
A: Many people would like to know how free radicals affect aging and the connection between DNA damage ...
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| difference between organic fertilizer and chemical fertiizer | 7/18/2008 |
Q: .i want to know what are the difference between the chemical fertilizer and organic fertilizer. ...
A: NPK fertilizer is considered inorganic, chemical fertilizer. Organic fertilizer consists of large, ...
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| eye colour | 7/16/2008 |
Q: what causes eye colour to change over time? recently my eyes have dramatically changed from bright ...
A: You don't say how old you are, nor whether you have been on any type of medication, either of which ...
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| Twins | 7/15/2008 |
Q: Does the decision of twins come from the Female side or the Male side or does it not matter? is ...
A: Identical twins are produced when a single fertilized ovum (zygote) or embryo divides completely, ...
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| Questions from New Zealand | 7/14/2008 |
Q: Are you able to answer the following questions for me please? I am from New Zealand and doing a very ...
A: I do not personally know anyone who is studying human botflies in Mexico, but there are several ...
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| golden algae | 7/14/2008 |
Q: We have a dirt tank or pond on our farm in West Texas. Recently, a moss has started growing and is ...
A: About the only remedy that won't harm your fish is a product called "pond shade." This is a dye ...
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| pale patch on the scalp: a birthmark? | 7/14/2008 |
Q: My son who is now 4 years old has always had a patch of hair on the back of his head that is very ...
A: In many cases, it's a nondisjunction mutation, where two chromosomes migrate to a single cell, ...
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| my babies hair color? | 7/13/2008 |
Q: I had dark hair as a baby and it eventually turned to blonde. My mom has blonde hair. And my dad had ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
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| pale patch on the scalp: a birthmark? | 7/12/2008 |
Q: My son who is now 4 years old has always had a patch of hair on the back of his head that is very ...
A: The definition of a "birth mark" is just a mark (usually considered a blemish) on the skin that ...
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| penguins | 7/11/2008 |
Q: I heard that there are ozone holes over Antarctica. How do the penguins survive the intense UV ...
A: Apparently, the holes in the ozone in Antarctica are starting to repair, and the UV danger might be ...
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| germs | 7/10/2008 |
Q: Dana i am mouna do all germs cause disease? what is the difference between G+ DND G-? what does ...
A: Not all "germs" (if by "germs" you mean microorganisms) cause disease. In fact, relatively few are ...
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| Tapeworms | 7/9/2008 |
Q: Do you know of a tapeworm species that dose not contain eggs? ANSWER: Dear Brandy, All species of ...
A: All mature tapeworms contain eggs in their mature segments. The earliest segments do not contain ...
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| Tapeworms | 7/9/2008 |
Q: Do you know of a tapeworm species that dose not contain eggs?
A: All species of tapeworm, when healthy and mature, contain eggs. There are no species and no ...
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| Does every human taste receptor work differently? Do we enjoy | 7/6/2008 |
Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
A: My answers are going to start sounding very similar, because the questions you are asking are also ...
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| Does every human taste receptor work differently? Do we enjoy | 7/4/2008 |
Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
A: I'll take them one at a time: - Basically all human taste show rejection to taste bitter...why is ...
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| Does every human taste receptor work differently? Do we enjoy | 7/2/2008 |
Q: I understand no human taste receptor work exactly the same,does all the normal human taste receptor ...
A: Unfortunately, your question isn't answerable any more easily than the question "do we all perceive ...
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| Height vs Arm Length | 6/1/2008 |
Q: My question is, what is the reason for the arm length being roughly the same as a persons height, ...
A: The simplest answer is that the proportions of the human body are adaptive. Any trait exhibited by ...
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| bioscience | 4/28/2008 |
Q: why the man is becoming older and older year after year?that also related to every living body.what ...
A: There is really no reason to think that a man should become stronger and stronger as he gets older, ...
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| Hair color of baby question | 4/24/2008 |
Q: My boyfriend has red hair and I have brown hair. Will my child be born with red hair?
A: If you have any recessive genes for red hair (this would probably show up as your having reddish ...
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| trophic level | 4/24/2008 |
Q: Can you explain the answer,thank you.. The following are examples of the first trophic level except ...
A: I don't answer homework questions, but I will explain that the first trophic level is the transfer ...
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| Cancer & Metabolism | 4/23/2008 |
Q: My grandfather passed away from cancer. We had learned about metabolic rates in our biochemistry ...
A: I am sorry about the loss of your grandfather. The Holy Grail in the field of cancer medicine is to ...
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| Neonatal Adrenal Complex (bovine) | 4/23/2008 |
Q: My husband recently saw a chiropractor who started him on a vitamin. I was checking out the ...
A: It sounds as if the "nutrient" you describe is derived from the adrenal glands of slaughtered ...
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| Please help | 4/22/2008 |
Q: Does dihydrotestosterone masculinize the brain during development?
A: I don't answer homework questions, but I can point you to a site where you can get some of the ...
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| careers in evolutionary biology | 4/19/2008 |
Q: I'm due to graduate with a bachelors in biology in a month or so and I've found myself really ...
A: The main thing in the life of any biologist is: research, research, research! If you're interested ...
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| anthropologial origin of europeans | 4/18/2008 |
Q: it is said that majority of europeans are indo-europeans based on languages they speak. question ...
A: The analogy between the evolution of languages and that of physical traits is a fascinating one. ...
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| genetics/predominant mutations | 4/17/2008 |
Q: I have a baby that was born with Leber's congenital amaurosis. It was our understanding that this ...
A: This one has me stumped, too. But I've just passed it along to three of the other folks who teach ...
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| biology | 4/15/2008 |
Q: details on phylogenetic relationship existing among the classes of protozoans
A: The very best, up to date phylogenies for all organisms can be found at the Tree of Life Web ...
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| Our first Child | 4/15/2008 |
Q: My boyfriend and i are expecting our first child in Late December. I was wondering what the possible ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Web sites on Biology | 4/15/2008 |
Q: Are there any good sites that will help me understand and learn more about biology?
A: Biology is such a huge subject that there's no single web site that will help you learn it. My best ...
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| Where to Find Bacteria | 4/13/2008 |
Q: I am doing a science project on how certain bacteria affect the growth and appearance of plants but ...
A: For liability and safety reasons, no reputable companies will send bacteria to private citizens. To ...
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| Biology Major | 4/12/2008 |
Q: I understand that you have a PH.D in biology so I ask what is you advise for those who vision ...
A: A biology major is a versatile major that will prepare you for a variety of different careers, from ...
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| unborn child | 4/11/2008 |
Q: I have hazel eyes and brown curly hair. My mother has brown curly hair and brown eyes. My father has ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Re: Hair colour | 4/11/2008 |
Q: what colour hair will my baby have? I was born with blonde/brown hair (and it has got darker as I ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| Where to Find Bacteria | 4/11/2008 |
Q: I am doing a science project on how certain bacteria affect the growth and appearance of plants but ...
A: You may need special permits to buy certain types of bacteria. But you'll have better luck ordering ...
|
| olive | 4/11/2008 |
Q: It is possible to product olive oil from black olives? All the olive oil I have ever seen is green
A: From our old pal, Wikipedia: "The most traditional way of making olive oil is by grinding olives. ...
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| my baby's hair colour | 4/10/2008 |
Q: I am 7 months pregnant and am (as all expectant mothers are) very excited about how my baby will ...
A: Human hair, eye, and skin color are very complex and difficult to predict, because each of these ...
|
| math and biology | 4/10/2008 |
Q: thanks
A: The field that interests you is known as Mathematical Biology. There are societies devoted only to ...
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| prebirth Questions | 4/9/2008 |
Q: I have two questions. 1) There is an “acid wash” as I have heard it referred to that happens to ...
A: The scrotal scar is due to the fusion in the male of the tissues that would have become the labia ...
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| Manatees and Marine Biologists | 4/8/2008 |
Q: I am doing a research paper on manatees and marine biologists. I can't find to much information on ...
A: I am not a manatee expert, but I think you can find some very good information here: ...
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| prebirth Questions | 4/7/2008 |
Q: I have two questions. 1) There is an “acid wash” as I have heard it referred to that happens to ...
A: 1. I have never heard of this "acid wash" in male fetuses prior to birth. If you can find a more ...
|
| diet | 4/6/2008 |
Q: I want to keep my metabolism at peak calorie burning level but reduce my calorie intake. I lift ...
A: As you probably know, aerobic exercise is the best way to burn calories. If you want to eat fewer ...
|
| Best age? | 4/6/2008 |
Q: Biologically, what is the best age to have children for a human? Is it the same across all races? ...
A: Biologically speaking, there's not a single "best" age. But it's generally safest for mother and ...
|
| Cloning | 4/1/2008 |
Q: What is cloning?
A: Cloning is the process of producing genetically identical individual organisms from an orignal ...
|
| Hardy Weinberg questions | 3/19/2008 |
Q: I'm not sure if you can help me; my maths is awful and I haven't studied for about 20 years; I am ...
A: I'm not sure I can help, but I'll try to describe this as simply as possible, and then you can ask ...
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| water in the human body | 2/27/2008 |
Q: Blessings to you Dana, not sure if this is a question to you, this is all new to me and not sure ...
A: When sources cite the human body as containing a certain percentage of water, they mean molecules of ...
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| Toxins | 2/27/2008 |
Q: A friend told me that there are fluids that the mere presents of them can cause vomiting in humans ...
A: Plenty of smells can elicit vomiting in humans, but the specific stimulus that elicits the response ...
|
| Evolution of leaves in plants | 2/24/2008 |
Q: I'm wondering, in which group of plants (Bryophytes, Seedless vascular plants, gymnosperms, or ...
A: Plant organs (root, stem and leaf) are defined by the presence of true vascular tissue. Because ...
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| how long do cells last? | 2/21/2008 |
Q: i was wondering what cell lasts the longest in the human body and how long it last? i cant seem to ...
A: Any cell that's present at the death of a very old human can be said to be a cell that has lasted ...
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| biology | 2/21/2008 |
Q: what animals survived in the tropical rain forest
A: I think this is a homework question, and I don't do those. But the answer would be so long that it ...
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| biology | 2/21/2008 |
Q: what happens to the level of oxygen, carbon dioxide and glucose if plant is covered for 8 hours
A: I won't do homework questions, but I can give you a hint: When a plant is covered with something ...
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| what is cancer? | 2/20/2008 |
Q: what is the cause the canser?
A: A cancer cell is formed when a combination of mutations of normal genes occurs to disrupt two very ...
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| biology | 2/18/2008 |
Q: Why can birds and fish do better than mammals in where oxygen is not as abundant?
A: Fish may require less oxygen for their metabolic functions because they are poikilothermic (i.e., ...
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| baby hair color | 2/17/2008 |
Q: Myself and my wife are thinking about having a baby and i just had a few questions about genes. My ...
A: I wish I could help you predict what your baby's coloring will be. But in the case of hair color ...
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| Fermentation Rates Using Yeast | 2/17/2008 |
Q: Krempels Thank you very much for reading this message. I am planning an experiment into the rates ...
A: You can review the chemical steps of fermentation here: ...
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| research information | 2/17/2008 |
Q: I am doing a project on whose mouth is cleaner a dogs or a humans but I am having trouble finding ...
A: Ah, okay! Well, the problem with doing any type of bacterial study is that it *is* advanced, and ...
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| biracial | 2/16/2008 |
Q: i wanted to ask if my boyfriend have blue eyes and his generation all has blue eyes with blonde ...
A: To know the probability that you carry any genes for light-colored hair, I would have to know which ...
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| research information | 2/16/2008 |
Q: I am doing a project on whose mouth is cleaner a dogs or a humans but I am having trouble finding ...
A: There may not be a lot of primary research on this particular topic, but you can get a start by ...
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| what hair colour will my baby have | 2/13/2008 |
Q: I have very blonde hair ( I'm 30 it's never darkened) my husband has light brown hair both our ...
A: Hair color is controlled by several different genes. But if you have very pale hair and your ...
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| digestion | 2/12/2008 |
Q: why does food spends so long in the stomach
A: The stomach is the place where the most "violent" digestion takes place, where proteins, lipids, ...
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| botany: difference between cypress and pine | 2/11/2008 |
Q: what are the differences between cypress and pines
A: Both the cypress and pine are conifers, meaning they produce seeds in cones, but do not produce ...
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| genetics | 2/10/2008 |
Q: ) i'm pregnant, and had a question about the genes i can expect my baby to inherit from the fathers ...
A: Your child will directly inherit the genes his/her father gives him/her, not the ones carried by his ...
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| Choosing a career | 2/10/2008 |
Q: I'm 18, i'm gonna move to the USA, the state of Maryland, germantown in a month. I'm persian. I know ...
A: A degree in biology will open many doors for you, but the higher your degree, the higher your ...
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| biracial | 2/9/2008 |
Q: i wanted to ask if my boyfriend have blue eyes and his generation all has blue eyes with blonde ...
A: If you have no family history of light-colored eyes or light-colored hair, then it is most likely ...
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| Rh- Blood Type and Evolution | 2/5/2008 |
Q: A friend and I are currently disputing evolution and his main point is that Rh- blood only occurs in ...
A: The Rh factor that gives human blood types one of its main immunological characteristics is a ...
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| Nervous System | 2/3/2008 |
Q: Can you please explain what a motor point is?
A: From our good ol' pal, the Online Biology Dictionary, a motor point is "A point on the skin where ...
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| minerals | 2/2/2008 |
Q: Minerals are deposited a- within bone marrow. b- within bone cells. c- between bone cells. d- all of ...
A: I'll give you a hint: bone marrow is a soft tissue in the middle of the bones where new blood cells ...
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| marine biologist | 1/8/2008 |
Q: because that is where i live and i don't know how far i want to go out of state so if you can help ...
A: You'll certainly have a financial advantage by staying in your home state, and there are good places ...
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| alteration of generations | 1/8/2008 |
Q: Do you know if there is an advantage between going through heteromorphic or isomorphic alternation ...
A: Mutations may or may not be harmful, so though you could make that argument, it might not hold up to ...
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| Biology | 1/7/2008 |
Q: what are three ways bacteria can exchange genetic material i no two binary fission-asexual ...
A: This sound like a homework question, but the three ways bacteria can share DNA are (1) conjugation, ...
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| Rna i + study tips on huge DNA test coming up | 1/7/2008 |
Q: well recently, my ap bio teacher enlightened us with a film on rna I . I found this to be profoundly ...
A: I'm glad you're enjoying your genetics lessons. :) I'll take your questions one at a time: > I ...
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| Help please | 1/6/2008 |
Q: Adrian decided to conduct an experiment on the affects of gibberellins on plant growth for a science ...
A: I can't answer your homework question, but I can give you a hint. Dwarf pea plants have an inborn ...
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| Agarose gel electrophoresis | 1/5/2008 |
Q: I am doing some research on recombinant DNA and I'd like to know why when i use EcoR1 restriction ...
A: This is the answer I got from my electrophoresis expert pal, Dr. Yunqiu Wang of the University of ...
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| Genetics | 1/4/2008 |
Q: Is the gene taken from a person who is intelligent(gene responsible for intelligence) can be used to ...
A: No. At this time the genetic link between DNA and intelligence is poorly understood, and there is ...
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| average male v. three average females in a fight | 1/3/2008 |
Q: A (male, possibly deluded) friend of mine is utterly convinced that he could beat three averagely ...
A: Sorry, but I can't really end this argument without knowing a LOT more about the physical ...
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| What's the purpose of the banana fruit? | 1/2/2008 |
Q: What purpose does the banana fruit serve for the tree if it's not the holder of the seed? I guess ...
A: Wild type bananas actually *do* have seeds. It's only the cultivars we eat that completely lack ...
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| light / blonde hair color at birth | 12/27/2007 |
Q: My husband and I just gave birth to our first child 2 weeks ago, a beautiful baby boy. He came out ...
A: It's not at all uncommon for babies to be born with light-colored fuzz hair that gradually darkens ...
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| cedar/goats/sheep | 12/27/2007 |
Q: If you can answer this, can sheep or goats have cedar as their bedding?
A: Cedar shavings are not very safe bedding for any type of animal, although it's much worse for small ...
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| Identifying an unusual fungus. | 12/20/2007 |
Q: I was wondering if you could identify this fungus, or point me in the right direction. The fungus ...
A: I had to pass this question along to our faculty's mycologist, who is capable of identifying just ...
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| genetic incompatibility | 12/19/2007 |
Q: I`m Dewi, 36 years old. My husband and I got married several months ago and plan to have a baby next ...
A: Actually, the more distantly related the parents, the *healthier* the baby is likely to be. As long ...
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| Husbands Child From Another Women | 12/17/2007 |
Q: My Husband and I got married 2 years ago and had a daughter who is now 1 1/2 years old. He is of ...
A: Paternity cannot be *positively* established with a blood test, but paternity can be ruled out with ...
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| Aneugenic | 12/16/2007 |
Q: i found this word while reading a precaution manual of VERMOX(Janssen-Cilag)tablet.i was not able to ...
A: An aneugenic agent is a chemical that promotes aneuploidy in cells by affecting normal cell division ...
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| Husbands Child From Another Women | 12/14/2007 |
Q: My Husband and I got married 2 years ago and had a daughter who is now 1 1/2 years old. He is of ...
A: Because your husband now expresses the dominant condition of hair and eye color (even though his ...
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| The effects of certain minerals on plant /seed growth | 12/12/2007 |
Q: I have been looking for hours for information on the following minerals with little luck. They are ...
A: Zinc and copper are micronutrients (i.e., nutrients that plants need in extremely small quantities) ...
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| Question about eye color inheritance | 12/11/2007 |
Q: I have two children that have blue eyes, and I have brown eyes. Their dad has blue eyes. I know that ...
A: Although eye color inheritance is turning out to be far more complex than scientists first thought, ...
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| Genetic Variation | 12/11/2007 |
Q: I really do appreciate your help. 1. A fruit fly with a gray body and red eyes (genotype BbPp) is ...
A: You're correct. Six percent of the offspring cohort are recombinants. You'd have to do a bit more ...
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| Genetic Coding | 12/11/2007 |
Q: 2. The base sequence of the gene coding for a short polypeptide is 3’-CTACGCTAGGCGATTGACT-5’. What ...
A: The sequence you transcribed from the original DNA strand is correct. But you need a little more ...
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| Pick? | 12/10/2007 |
Q: Im doing a Language Arts Project Called "Ethics Essay Assignment" I wanted to study and search about ...
A: We do not yet have the biotechnology to genetically engineer human babies' traits. Many people ...
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| Swallowed | 12/9/2007 |
Q: If it were possible and i could be shrunk to about 2inches in height, what would it be like if my ...
A: I'll assume this is a serious question and answer. 1. No amount of antacids would get a stomach to ...
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| Viral dangers | 12/9/2007 |
Q: If someone carrying a virus(for example, Anthrax) died, and a carnivore were to eat the body, could ...
A: Whether a virus can "jump species" and become a dangerous pathogen in the new host depends on the ...
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| heterochromatin | 12/7/2007 |
Q: What was the reasoning behind naming heterochromatin heterochromatin?
A: I can't find this in any of my dozen or so Genetics textbooks, either. So how about an educated ...
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| biology | 12/7/2007 |
Q: Is fire alive?
A: No, fire is not alive. Fire is the visible result of the release of energy from matter that is ...
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| small intestine | 12/7/2007 |
Q: in biology class, we had a worksheet that said that we(humans) CAN NOT live without our small ...
A: You *might* be able to live for a while without your small intestine if you were put on intravenous ...
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| DNA seqeunces | 12/3/2007 |
Q: I understand that DNA understands information in the form of codes using ACTG and that these codes ...
A: Your question is a little bit difficult to decipher, but I'll do my best. I think the problem is ...
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| A curious question about our human body inhaling. | 12/3/2007 |
Q: I have done research and research, but I am not completely sure about 3 parts of it. 1)The ...
A: 1. The alveoli *are* part of the lungs. They are the tiny, microscopic, saclike structures, each ...
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| biology | 12/3/2007 |
Q: why can't men pass on kearns sayre syndrome to their offsprings
A: Kearns Sayre Syndrome is a (rare) disorder associated with a harmful mutation in the DNA of the ...
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| Genetics: Natural Genetic Engineering? | 11/30/2007 |
Q: I know about artificial genetic engineering but is there such a thing as "natural genetic ...
A: J. Genetic engineering is the modification of genomes by humans. I wouldn't call the analog in ...
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| babys looks | 11/28/2007 |
Q: me- i have blonde hair and blue eyes mum - blonde hair and blue eyes dad - mousy brown and blue eyes ...
A: Both hair and eye color in humans is controlled by more than one gene, and this makes it very ...
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| 2nd grade science project | 11/28/2007 |
Q: My son needs to do a science project, and I was thinking that it would be nice to shoe him and his ...
A: Although this will mean that your son's project won't be exactly original, you can find a great way ...
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| tissues | 11/27/2007 |
Q: what is the endosymbiotic hypothesis?
A: The notes from one of my Evolution and Biodiversity course lectures can help explain this to you. ...
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| Brain chemical synthesis | 11/24/2007 |
Q: The human brain uses a similar compound in its metabolism as THC and has receptors for this use. ...
A: Neither THC nor its metabolites are used for normal bodily functions in humans. THC metabolites are ...
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| Genetic Engineering | 11/21/2007 |
Q: I recently read about the PEPCK-Cmus mice. In the article concerned it said that the genetic ...
A: No, the process of genetic engineering is not as simple as the article made it sound. A gene to be ...
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| Human Vision | 11/18/2007 |
Q: I've always assumed that human vision was about average by comparison to other animals, but I ...
A: Rhodopsin, the pigment found in our rod photoreceptors, has a maximum absorbance at about 500nm ...
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| homosapians | 11/16/2007 |
Q: What is a homosapian?
A: Homo sapiens is the scientific name of our own species. It is a Latinized name, meaning ...
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| science | 11/15/2007 |
Q: Why is sodium not used to make cutlery?
A: Well, for one thing, it's a very brittle metal in its pure form. And, more importantly, it reacts ...
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| need help | 11/14/2007 |
Q: how many years can the bee live
A: Lifespan of a bee depends on the species of bee, and even its sex. Most biologists refer to the ...
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| reactants of photosynthesis | 11/14/2007 |
Q: For a section on photosythesis in our marine ecoloy section this semester we have to now about ...
A: The reactants are the chemical compounds that change into something else over the course of the ...
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| ... | 11/13/2007 |
Q: Does smog and cigarette smoke have any type of effects on plant growth?
A: It depends on what component of smog or cigarette smoke you're considering. Some compounds, such as ...
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| TRIBULUS | 11/12/2007 |
Q: I have been told that tribuluse is good for you is this true. thank you .......
A: This from our old pal, Wikipedia: "Tribulus is a genus of plants found in many warm regions. The ...
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| serology | 11/9/2007 |
Q: when a person faces to these pathogens,his wright test(brucellosis test)shows false positive: ...
A: Some serology assays, such as ELISA, are not specific enough to tell the difference between the ...
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| Brain | 11/8/2007 |
Q: 1. How do the human brain function? 2. How does we remember things and how do we forget things? ...
A: This question is so involved and complex that it would take an entire textbook to explain, and it's ...
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| Personality | 11/7/2007 |
Q: Which Chromosome(s) is responsible for personality traits ?
A: The role of genes in generating personality is not yet known, although researchers are very slowly ...
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| genetics | 11/4/2007 |
Q: I'm not sure what is NOT true about genetics. I know that linked genes are located on the same ...
A: Yes, linked genes are located on the same chromosome. The genes will segregate together during ...
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| Sliding Filament Theory Analogy | 11/2/2007 |
Q: I'm trying to understand all of the processes of the sliding filament theory - how calcium, actin, ...
A: I can't think of any analogies that would encompass all the components of the sliding filament ...
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| Flagellum: Irreducibly Complex | 11/2/2007 |
Q: I have heard information about a flagellum that I need to confirm with the experts. I do not know ...
A: A cilium is basically a short flagellum, and they operate in very much the same way. The argument ...
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| cell biology | 10/27/2007 |
Q: why do we use only methylene blue to stain animal cell why not iodine?
A: Different stains are used to stain different parts of the cell. Methylene blue tends to stain ...
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| Science | 10/26/2007 |
Q: Do you know of a web site for the medical community to collaborate, share ideas, update research ...
A: I know of no central web site like the one you describe. But one good way to find a PI is to do a ...
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| bacteria / microbe living conditions. | 10/14/2007 |
Q: some bacteria/microbes live near underwater vulcano eruptions, there must be extreme heat at these ...
A: The bacteria (actually known as Archaeans) that you're referring to are known as extreme ...
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| eye color | 10/13/2007 |
Q: What color eyes will my baby have if my eye color is light brown and my mates eye color is blue ...
A: Eye color is controlled by several genes, so it is not possible to predict the offspring eye color ...
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| facial feature formation and hormone levels | 10/12/2007 |
Q: I have read that testosterone levels in males facilitate male facial characteristics, such as chin, ...
A: If the genes do not encode formation of a "strong jaw" or high cheekbones, then additional ...
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| Biology | 10/12/2007 |
Q: if you blow up s balloon and then hold it in front of a stove, it increase in size. is the balloon ...
A: Biological growth has three aspects: (1) increase in cell size, (2) increase in cell number and (3) ...
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| facial feature formation and hormone levels | 10/10/2007 |
Q: I have read that testosterone levels in males facilitate male facial characteristics, such as chin, ...
A: Most physical characters are affected by both Nature (genes) and Nurture (environmental influence), ...
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| genetics | 10/2/2007 |
Q: can u please help me understand genetics. its a difficult subject matter. i get that R is dominant ...
A: I will be happy to help you if you can ask me a more specific question. But the subject of genetics ...
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| injuries | 9/30/2007 |
Q: does having more muscle mean you have less injuries? like, someone with a normal amount would be ...
A: If the problem is just from straining your connective tissue, then yes, strengthening your muscles ...
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| injuries | 9/28/2007 |
Q: does having more muscle mean you have less injuries? like, someone with a normal amount would be ...
A: If your muscles are stronger, you are less likely to suffer injuries to your skeleton and connective ...
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| Water molecules in redwood trees | 9/27/2007 |
Q: How long does it take for a water molecule to go from the root of a coastal or inland redwood tree ...
A: Unfortunately, there isn't a single, simple answer to your question. The rate of transpiration ...
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| Eco-tourism | 9/26/2007 |
Q: I'm not dumb or anything it's just that I don't know this answer to this question on my project that ...
A: If you're asking specifically about how eco-tourism has affected the rainforest, I can give you ...
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| Mammal classification | 9/25/2007 |
Q: I have a question regarding the classification of mammals. The old view, based on morphology, ...
A: What very little I know about these clades, I will share. But this isn't my area of expertise. :) ...
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| biology: food web and energy pyramid questions | 9/24/2007 |
Q: why is the energy pyramis so complicated as for the trophic level
A: Your question is not worded very clearly. Are you asking why the trophic levels are so complicated? ...
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| Ecology | 9/24/2007 |
Q: how can a samll biomass of producers such as algae, support a larger biomass of consumers such as ...
A: If the producers (phytoplankton/algae) reproduce extremely rapidly--more rapidly than the ...
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| Microbiology | 9/23/2007 |
Q: If bacteria can develop resistance to things like antibiotics, then why can't they develop ...
A: A common misconception about natural selection is that organisms can evolve thing because they need ...
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| melanin question | 9/23/2007 |
Q: are there any chemicals that can permanently inhibit the melanogenic enzymes, such as tyrosinase, ...
A: There are many different agents in use in cosmetic medicine that lighten the skin by inhibiting ...
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| Why do plants grow on hills? | 9/23/2007 |
Q: I am in class 9th andv I clange u to tell me the answer of this question Why the plants grow on the ...
A: This is a pretty vague question. But I will answer it as asked: Plants grow on hills because there ...
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| twins | 9/21/2007 |
Q: Does the possibility of having fraternal twins come from the mother or the fathers' genetic ...
A: It is likely, since twinning in both sides of your future children's families has been sporadic, at ...
|
| Root study | 9/21/2007 |
Q: I am M.Sc student in Agronomy I want to plant wheat and an annual weed in a tube, close to each ...
A: This is an interesting problem, but I don't think it's going to be easy to discriminate between the ...
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| expressing of mutation | 9/20/2007 |
Q: Dr. Krempels: I took bio for non-science majors in college and became facinated by genetics. We ...
A: These are very interesting questions, and you have the makings of a biologist! :) Plant mutations ...
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| DNA Replication | 9/19/2007 |
Q: i was wondering what the basic steps are in dna replication
A: DNA replication is sometimes divided into three phases called Initiation, Elongation, and ...
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| twins | 9/15/2007 |
Q: Does the possibility of having fraternal twins come from the mother or the fathers' genetic ...
A: It is more likely that this tendency runs in the maternal line, since multiple ovulations are a ...
|
| biology | 9/13/2007 |
Q: i was wondering is water a temperature stabilizing substance for living organisms
A: Yes, it is. Water has a very high specific heat: it takes one calorie to raise one gram of water ...
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| plants and sponges | 9/12/2007 |
Q: I can't believe I have to ask this. My daughter Leah has a homework question and I am not 100% sure ...
A: That's not an easy question, actually! As you know, a sponge is more closely related to animals ...
|
| 46 chromosome creatures | 9/10/2007 |
Q: I have two questions : 1- I am wondering what are the creatures that has 46 chromosomes other than ...
A: This is a difficult question to answer, since karyotype information on various species is sparse and ...
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| Taxonomy | 9/10/2007 |
Q: what is the domian of a lion
A: Although this sounds like a homework question, I'll give you some hints. There are three domains ...
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| definition of pain | 9/9/2007 |
Q: Krempels, I asked you a question a few weeks ago regarding the hypothesis of pain in plants. But I ...
A: Well, the medical dictionary definition of "pain" runs as follows: "Pain: An unpleasant sensation ...
|
| microscope field of view | 9/8/2007 |
Q: My introductory college anatomy/physiology course had its first and only histology lab last night. ...
A: The answer to #1 is yes. Most (but not all) oculars are 10x magnification. Number 2 is a little ...
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| botany | 9/7/2007 |
Q: Do you know what spinifex is? I think it's grown in Australia. Thanks.
A: I'd never heard of spinifex before, but a quick Google search yielded this web site, with some very ...
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| Population its important | 9/5/2007 |
Q: why would an animal species which feeds on a varied diet have an advantage on one with a specialized ...
A: Now, I bet you could figure this out if you think about it for a minute. :) If an animal is able ...
|
| normal pH of the mouth | 9/5/2007 |
Q: what is the pH of mouth
A: Under normal circumstances, the pH of the human mouth stays close to neutral (pH 7.0), though this ...
|
| biochemistry | 9/4/2007 |
Q: What is the differences between glycolysis,Kreb's Cycle and electron transport chain?
A: Hamdan, The three processes you name are three parts of the complete chain of events required for a ...
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| The Tundra Biome | 9/1/2007 |
Q: Will global warming have an effect on the tundra biome? Will it cause certain species to become ...
A: Of all the earth's biomes, the tundra and arctic/antarctic habitats are probably going to be the ...
|
| Biology Terms | 8/31/2007 |
Q: I have been looking for a book that gives the meaning of biology terms. For example biology bio= ...
A: If you're looking for a dictionary of word roots and combining forms for biology, then I have the ...
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| reactions of human body | 8/31/2007 |
Q: Krempels, I know that many harmful stimuli can cause pain to humans (a cut, a headache, etc.)and ...
A: The only other automatic defense response I can think of off the top of my head is the reflexive ...
|
| bio | 8/31/2007 |
Q: MAY BE YOUR ANSWER WILL BE THAT WATER SOLUBLE VITAMINS ARE EXCRETED IN URINE THATS WHY WATER SOLUBLE ...
A: When we urinate out excess fluids, any excess water-based vitamins that were circulating in our ...
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| biology | 8/30/2007 |
Q: what is heat?
A: Heat is caused by molecular motion. The faster molecules are moving in a gas or solid, the higher ...
|
| Rainforest Biome | 8/29/2007 |
Q: At what rate is the rainforest shrinking and at what point could our resources from the rainforests ...
A: I think you will be able to find the answers to these questions and more here: ...
|
| Desert Biome | 8/29/2007 |
Q: Im doing a biome project for my Biology Class and my biome is the desert (hot desert). I am ...
A: Many desert plants have relatively long lifespans. Among the longest lived are things like Joshua ...
|
| baby | 8/28/2007 |
Q: I am 4 mo. pregnant and I have a question about what my baby's eye color might be. I have med/dark ...
A: Since your mother has hazel eyes, you have inherited the recessive "light eye" allele from her, ...
|
| recent questions regarding zygotes | 8/26/2007 |
Q: first let me apologize for the recent questions regarding the classification of zygote. That was my ...
A: Please don't worry about having caused anyone to send me odd questions about classification. ...
|
| question about HPV vaccine | 8/24/2007 |
Q: how are you? I was wondering if you can provide your opionion. I am writing a essay on this topic ...
A: In my personal opinion, the state should leave that decision to the individual. Vaccines are not ...
|
| species membership | 8/23/2007 |
Q: Krempels, Your very prompt reply seemed to say that there was no scientific answer to my apparently ...
A: [And since living sperm and living egg combine to form a living creature with a new DNA code, it ...
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| species membership | 8/23/2007 |
Q: Krempels, Your very prompt reply seemed to say that there was no scientific answer to my apparently ...
A: ["Life" is a continuum, is it not?] "Life" has a precise, specific definition in the biological ...
|
| species membership | 8/23/2007 |
Q: Krempels, Your very prompt reply seemed to say that there was no scientific answer to my apparently ...
A: I'll bracket your quotes so that I can answer each section in turn: [Your very prompt reply seemed ...
|
| membership in species Homo sapiens | 8/22/2007 |
Q: Krempels: You were recently quoted as saying that the human zygote was not a member of the species ...
A: Followup to Mr. Chadwick's contention that my answer (appended below) was evasive: My answer was ...
|
| The desert | 8/21/2007 |
Q: my name is Kevin and I am doing a summer project for my AP Biology class. For our summer work we ...
A: Well, I'm sure you know the desert is a very dry environment. So the animals that live there must ...
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| genetics | 8/21/2007 |
Q: what is the best definition of a heterzygote. a. an individual with two dominant alleles. b. an ...
A: This is a homework question, which you should probably do on your own. It's a very basic level ...
|
| Can't remember the name of this... | 8/21/2007 |
Q: I can't think of the name of this, but I remember hearing that there is a way to tell how close two ...
A: Are you referring to DNA sequencing? One way to determine how closely related two species are is to ...
|
| Genetic experiment | 8/20/2007 |
Q: Explain in detail how you would prove that a black guinea pig is heterozygous or homozygous (Worth ...
A: Before you can answer this question, you need to know whether the allele coding for the black fur is ...
|
| project | 8/19/2007 |
Q: Sir please tell me the topics related to biology project for class12
A: From the wording of your question, it is very difficult for me to figure out what you are asking. ...
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| genetics | 8/18/2007 |
Q: why do women give birth to twins occassionally?
A: If a woman ovulates two ova (eggs) in one cycle, and both are fertilized by her partner, then she ...
|
| Can Laughter Change DNA genes? | 8/14/2007 |
Q: I'm trying to understand the conclusion in the following report :- ...
A: Wow, that's a very interesting study! The results don't mean that laughter is actually changing the ...
|
| Color and hair of our first baby. | 8/7/2007 |
Q: The whole family is curious as to what color hair she is going to have. I have brown hair,my mother ...
A: Since both hair and eye color are governed by several genes each, it is nearly impossible to ...
|
| baby genetics | 8/4/2007 |
Q: it would be great if you could answer this question for me,i have dark blonde hair with blue eyes ...
A: Hair color and eye color in humans are each controlled by several genes, and this makes it nearly ...
|
| plants and emotions | 8/3/2007 |
Q: I know it might sound weird but do you think that plants have feelings such as sadness, distress or ...
A: The question you asked isn't weird: many people have wondered about it over the ages. ...
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| my unborn child's hair and eye color | 7/31/2007 |
Q: My boyfriend and I are expecting our first child in Feb and I was wondering if you can tell me what ...
A: Hair and eye color in humans are controlled by several genes each, which makes predicting the ...
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| Classification of Homo Sapien cells as HS themselves | 7/31/2007 |
Q: I'm doing research on biological identity and wanted to clarify whether different humans cells can ...
A: Interesting ideas, and certainly more in the realm of philosophy, at this point, than science, which ...
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| Classification of Homo Sapien cells as HS themselves | 7/28/2007 |
Q: I'm doing research on biological identity and wanted to clarify whether different humans cells can ...
A: I don't know any biologist who would classify a single cell from a Homo sapiens as a Homo sapiens. ...
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| mitosis vs. meiosis | 7/27/2007 |
Q: what is the difference between mittosis and mioses?
A: Mitosis is the type of cell division that occurs when a cell makes identical copies of itself. A ...
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| scientific names of organisms | 7/24/2007 |
Q: will u please provide me with the names of some of these organisms ...
A: Here are those names. Note that a scientific name is correctly written only if the genus (first ...
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| shark question | 7/19/2007 |
Q: Why can't a shark live out of water, even if it has water flowing through it's gills for ...
A: One reason is that the watery habitat provides buoyancy for the shark's body. The fish can be out ...
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| Fingers & orgasam | 7/19/2007 |
Q: I have two questions.one is which i experienced,other one was something i studied for some time but ...
A: In answer to #1: Your fingers get wrinkly when they're in water for a long time because water is ...
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| Will my baby look more like its father or its mother? | 7/16/2007 |
Q: my name is German Cortes I'm a proud parent to be, i want to know if there is any way to find out ...
A: Most human traits are controlled by several different genes, and the more genes involved, the more ...
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| How Do Two Blue-Eyed Parents Produce a Hazel-Eyed Child? | 7/14/2007 |
Q: My husband and I are the parents of six children. Both my husband and myself have blue eyes as do 5 ...
A: It is unusual for two blue-eyed parents to produce a hazel-eyed child, but not impossible. There ...
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| baby hair and eye color | 7/12/2007 |
Q: i am having a baby soon and I was just curious about what he/she will look like!!! I have hazel ...
A: With such a happy mix of hair and eye color genes, there is not sure way to predict exactly what ...
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| bio | 7/12/2007 |
Q: how are bacteria and fungi able to decompose the dead bodies of plants and animals and why are ...
A: Bacteria and Fungi have many different types of enzymes (functional proteins) that can break down ...
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| BIO Gametes | 7/11/2007 |
Q: Dana I would to take the time to say my Thank you for the quick respond on my previous question. ...
A: If we designate the handedness gene as "R" and the eye color gene as "B", then the genotype of the ...
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| BIO Gametes | 7/10/2007 |
Q: A man and woman both have normal color vision, they have two children, a son with normal vision and ...
A: Your answer is absolutely correct! :) I cannot send you an answer via email because your email ...
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| human eye | 7/8/2007 |
Q: i have wondered for a while how many frames per second the human eye can see? i know many think that ...
A: The flicker fusion point of the mammalian eye (including the human eye) is usually considered to be ...
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| punnett squares | 7/7/2007 |
Q: I am having trouble setting up a punnet square for two traits. One being white or black hair, and ...
A: To set up a Punnett Square for two traits, you don't really need to know which trait is dominant and ...
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| Hardy-Weinberg | 7/7/2007 |
Q: I am currently taking a biology course correspondence, and have found difficulty with this ...
A: If you're studying the allele frequencies of a gene with two alleles, then the frequency of the ...
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| red hair | 7/6/2007 |
Q: I'd appreciate a little info about the red hair gene. I have blonde hair as does my baby's father, ...
A: Hair color in humans is controlled by several different genes, including genes that code for the ...
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| plants | 7/3/2007 |
Q: how can a floating pond plant,such as duckweed,survive without having its roots in soil?
A: I just found your question in the Biology question pool, and thought I could help. Plant roots ...
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| resources | 7/3/2007 |
Q: I'm wondering if you can name some great books on biology for non-biologists. There are two types ...
A: Because Biology is such a HUGE field, with many subdisciplines, there is no single work that could ...
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| Research review | 7/2/2007 |
Q: Greetings, My name is Larry Thomas and I am an American living in Wiesbaden, Germany. I am currently ...
A: This is a very extensive site, and an interesting idea. I will try to find the time to have a ...
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| ecology | 6/30/2007 |
Q: Why is acid rain more of a problem today then 100 years ago? Is it related to the fact that 100 ...
A: You are exactly correct. The emissions caused by the burning of fossil fuels cause sulfur and ...
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| Zoology: Non-mammalian external ears | 6/30/2007 |
Q: Krempels, Are there any exceptions to the general pattern that only mammals have external ears? If ...
A: This is an interesting question, but the answer might be really simple. Animals don't evolve ...
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| bio | 6/28/2007 |
Q: sir what is the difference between small pox and measles? what is the difference between blood and ...
A: Both measles and small pox are viral diseases that can cause many deaths in unvaccinated human ...
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| Evolution | 6/28/2007 |
Q: I am looking for a list of all of the known species that have existed(from single celled organisms ...
A: I do not think there is a single list of all the species that ever have existed (or at least are ...
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| the five kingdoms | 6/27/2007 |
Q: what's the differences of the monera kingdom to the other kingdoms
A: I just now found your question in the Biology question pool, and though it's been a few days, I hope ...
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| genetics | 6/25/2007 |
Q: If the dominant trait shows in a person, what would there genotype be? how did they obtain it. Does ...
A: If the trait you are considering has only two alleles, a dominant (A) and a recessive (a) version, ...
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| Human phaeomelanin production questions? | 6/25/2007 |
Q: When stimulated by one of the cleavage products of proopiomelanocortin, typically α-melanocyte ...
A: The issue you are trying to address is far more complex than can be solved by simply buying Asip and ...
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| Animal Tissues | 6/25/2007 |
Q: sir i want to ask what are animal tissues?what are epithelial tissues,connective tissues ,muscular ...
A: This sounds like a homework question, which you'll need to answer partly for yourself, but I can get ...
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| dry mouth and balloons | 6/25/2007 |
Q: Why is it difficult to whistle or blow balloons if you have a dry mouth?
A: Saliva acts as a lubricant for the mouth, and wet tissues will vibrate more readily than dry ...
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| Color of our bi-racial baby's eyes | 6/23/2007 |
Q: My husband is white with green eyes, sandy blonde hair. His mom has green eyes, sandy blonde hair; ...
A: If you are of African heritage for as long back as your family is aware, then it is very likely that ...
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| baby eyes.. and hair | 6/22/2007 |
Q: I just have a quick question.. my daughter's father has brown eyes and dark brown hair. His whole ...
A: Eye and hair color in humans are both complex traits, each controlled by more than one gene locus. ...
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| Language & voice relation | 6/22/2007 |
Q: I'm just wondering if there's any proven relation between a person's mother tongue and their voice ...
A: I know of no studies in which anyone tried to link voice timbre to native language. If one were to ...
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| genetics | 6/22/2007 |
Q: We've all heard that the woman contributes the "XX" chromosome and the man contributes either the ...
A: First, a little background: Humans have a total of 46 chromosomes. You get one set of 23 from your ...
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| Baby eye and hair color | 6/20/2007 |
Q: I am not asking for exact color, just light or dark. My parents and all my 4 of my siblings have ...
A: Eye and hair color in humans are both complex traits, each controlled by more than one gene locus. ...
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| Genetics and evolution | 6/14/2007 |
Q: Dr. Krempels, I was hoping you could shed some light on an argument a friend and I were having on ...
A: By definition, individuals of the same species must be able to breed to produce fertile, viable ...
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| Head_ Hair | 6/14/2007 |
Q: I have a very curious queston.Why does the growth of human hair(head) differs men with women? As far ...
A: There is no significant difference in overall hair growth rate between the sexes in humans. There ...
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| Biology | 6/12/2007 |
Q: What is the endoplasmic reticulum?
A: The endoplasmic reticulum is a network of plasma-membrane "canals" that runs through the cytoplasm ...
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| Hooves and feet | 6/10/2007 |
Q: If humans had hooves instead of feet would they still be able to walk (let's say they are born with ...
A: If a human was born with hooves instead of feet, it would be the result of a mutation so bizarre ...
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| Why do ripe fruits - especially when canned - smell bad? | 6/10/2007 |
Q: I notice that many fruits [excluding apples] emit foul odors when ripe. What chemicals are ...
A: Interesting question! I don't think you have an olfactory perception "disorder." But I do think ...
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| baby eye and hair color! | 6/6/2007 |
Q: i wanted to know if you could help me try to figure out what color hair and eyes my baby will have I ...
A: Both hair color and eye color are controlled by more than one gene, and the more genes affecting a ...
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| biology | 6/4/2007 |
Q: branches of biology
A: Are you asking what the various branches of biology are? Your question is not clear. But there are ...
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| Recombination | 6/3/2007 |
Q: This is not a homework question-really.The answer is there in the book but I can't figure how they ...
A: Geetha, The question you've asked would need an entire Genetics lecture to adequately answer, but ...
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| about plant fruits | 6/2/2007 |
Q: I wonder if you could tell me if plant fruits are living organisms like the plant itself? Actually, ...
A: Plants are composed of living tissue, but the plant itself really cannot be considered an individual ...
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| evolution of the male voice | 6/2/2007 |
Q: Do you know of any theories that account for the evolutionary reasons behind men having deeper ...
A: Sorry for taking so long to respond. Your followup caught me at a point where I'm doing too many ...
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| evolution of the male voice | 6/1/2007 |
Q: Do you know of any theories that account for the evolutionary reasons behind men having deeper ...
A: In most mammal species, the male is somewhat larger than the female, and this often means that his ...
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| Biology | 5/31/2007 |
Q: can u tell me more about the Discovery of Third type of twins?
A: The two best known types of twins in humans are (1) fraternal twins, produced when a mother ovulates ...
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| food prices | 5/29/2007 |
Q: why do foods that are rich in fat tend to be more expensive to buy when compared with carbohydrates? ...
A: Ah, well if you're comparing steak to potatoes then it's not the fat content that makes the ...
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| Medicines: what do they do to the human gene pool? | 5/29/2007 |
Q: what is the effect on the human gene pool of the discovery of expensive medical treatments that ...
A: You have two separate questions, each of which has a different type of answer. The first one is ...
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| hi | 5/29/2007 |
Q: Because the genetic information is carried equally by egg and sperm, what do you suppose to be the ...
A: The question you ask is as old as the question "why sex?" There is no definite answer except to say ...
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| Why a urinary bladder? | 5/29/2007 |
Q: what is the advantage of having a urinary bladder?
A: Well, for one thing it gives you a place to store urine, if you're a terrestrial mammal, so that you ...
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| Sickle Cell Anemia | 5/29/2007 |
Q: what is sicle cell anemia?
A: This is a genetic condition carried by about 1 in 10 people in the U.S. of African descent. A small ...
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| laughter | 5/25/2007 |
Q: Is there any biological reason for laughter? Why are only humans capable of it, and what is the ...
A: What's the deal with laughter? Why do we do it? This is a question still being pondered by both ...
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| plants | 5/23/2007 |
Q: If plants can grow in the dark what happens when the plant is placed in light?
A: Plants can grow in the dark only for a limited time, since they get energy for growth only from ...
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| Regeneration | 5/22/2007 |
Q: How do starfish regenerate completely? Is it similar to the fetal development process? How is the ...
A: Starfish retain in their bodies a number of cells that continue to be totipotent throughout their ...
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| cell receptor | 5/18/2007 |
Q: Apart from receiving cell signal, what is an important function of the cell receptor?
A: I am not exactly sure what you mean by "cell receptor." Do you mean protein binding sites on the ...
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| plants defense mechanism | 5/18/2007 |
Q: I was wondering...do you think that plants can suffer when being cut or damaged? I found this ...
A: As far as we know, a nervous system with a brain is a necessary prerequisite for feeling pain. And ...
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| Adaptation | 5/18/2007 |
Q: I wrote you an e-mail a couple of days ago regarding several issues on evolution, adaptation and ...
A: Jeffrey (Of course I remember you!) You ask some really interesting and difficult questions...some ...
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| photosynthesis | 5/18/2007 |
Q: Why do plants need oxygen? I know they produce it but i did not know they needed it.
A: All living things that break down sugar to use its energy for doing cellular work need oxygen. ...
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| becoming a research scientist in biology | 5/16/2007 |
Q: I would like to find out exactly what it takes to become a research scientist in biological ...
A: You're never too old to change the course of your life, and if you have the will, there is a way. ...
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| DNA replication | 5/15/2007 |
Q: How many genes undergo DNA replication before mitosis? ANSWER: Dear Julie, When a cell prepares for ...
A: Juuuulieeee.... Are you using me to answer your homework questions? I need you to read your ...
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| DNA replication | 5/15/2007 |
Q: How many genes undergo DNA replication before mitosis? ANSWER: Dear Julie, When a cell prepares for ...
A: I had to laugh, because your question showed up twice in my mailbox, looking like this: DNA ...
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| Selfish Gene Theory | 5/15/2007 |
Q: I am a Ph.D. Psychology student in Germany, and I am extremely interested in how biological ...
A: Richard Dawkins is nothing if not controversial! His work has provoked a great deal of support, as ...
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| biological aspects | 5/15/2007 |
Q: It is likely that genes that influence people's propensities to be agressive or depressed, or ...
A: What you say in the first sentence is undoubtedly true, and is of a biological nature. Your ...
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| DNA replication | 5/15/2007 |
Q: How many genes undergo DNA replication before mitosis?
A: When a cell prepares for mitosis, *all* the DNA in the nucleus is replicated. Depending on what ...
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| Evolution puzzle | 5/13/2007 |
Q: There is an aspect of evolution that is puzzling me. Am I right in thinking that evolution works by ...
A: This is a question that many have discussed and argued ever since Darwin ever put forth his ideas ...
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| part vs. whole | 5/13/2007 |
Q: Could you explain the prmise "evolution does not act on a part; it acts on the body as a whole"? ...
A: The unit of evolution is the population, and selection acts at the level of the individual organism, ...
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| question for you | 5/10/2007 |
Q: What effects does progesterone hormones have on sex cells?
A: This is an area of ongoing study, and I'm sure there are more effects than what I'll mention briefly ...
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| biology | 5/10/2007 |
Q: after plants are eaten by animals what proces changes the carbon in these organic compounds back to ...
A: Only decomposer organisms such as bacteria and fungi can convert organic carbon compounds into ...
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| Biology | 5/7/2007 |
Q: In peas, green pods (G) are dominant to yellow pods (g). If a homozygous dominant plant is crossed ...
A: If a true-breeding dominant plant is crossed with a true-breeding recessive plant, then 100% of the ...
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| segregation distorters | 4/28/2007 |
Q: A quote from a book by Richard Dawkins, "Meiosis, too, is a physical process, and it can be ...
A: I just joined AllExperts in the Biology category, and found your question. If I'm not mistaken, ...
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