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About Dana Krempels, Ph.D.
(Top Expert on this page)

Expertise
I can answer biology-related questions in the areas of evolution, zoology, botany, genetics, and ecology. But I don't answer homework questions or provide ideas for your science fair projects. So students please do your learning the right way by reading your text assignments and studying!

Experience
At the University of Miami, I teach Evolution and Biodiversity, Botany, Zoology, Genetics, Ecology, and a variety of seminars (e.g., the Biology and Evolution of Human Gender Roles).

Education/Credentials
I have a B.S. in Biology and an A.B. in English from the University of Southern California (1980). I earned my Ph.D. in Biology in the area of evolutionary biology/visual physiology from the University of Miami in 1989.

Past/Present Clients
I am currently an "expert" in both the "Rabbits" and "Wild Animals" categories.

   

You are here:  Experts > Science > Biology > Biology

SubjectDate AskedExpert

mitosis and meiosis11/21/2009Chris Bemes
  Q: What's the difference between mitosis and meiosis?
  A: Here are a couple of websites with some good information that will help you better understand the ...
Biogeochemical cylces11/19/2009Walter Hintz
  Q: How would phosphorus dust travel from Aisa to Kauai via wind. Would it b the hydrologic cycle ...
  A: Unless I am missing something here b you are talking about dust being carried by the wind. It is ...
what is this worm?11/17/2009Dana Krempels, Ph.D.
  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 ...
Enzyme Catalysis11/15/2009John Locke
  Q: How does the structure of an enzyme relate to its function and what factors can affect the initial ...
  A: Enzymes function as biological catalysts, meaning that they increase the rate of biological ...
Oily skin11/15/2009Dana Krempels, Ph.D.
  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 ...
Circulatory route take by RBC from site of production.11/14/2009John Locke
  Q: Describe the circulatory route taken by a red blood cell from its site of production, in some part ...
  A: Red blood cells (RBCs) begin life in the bone marrow--mostly in the ribs, vertebrae, and pelvis in ...
can i ask a question sir ?11/14/2009Walter Hintz
  Q: what is the importance of studying biology ? please answer my question sir, thank you
  A: Every once in a while I get this question and I must admit it amazes me because to me the answer ...
Bacteria11/13/2009Chris Bemes
  Q: I am going to be doing a experiment on the effect of domestic disenfectants on bacteria, I am ...
  A: There are many different types of bacteria that would fit the description of being ubiquitous (found ...
Science Projects11/12/2009Walter Hintz
  Q: Did you ever have diffuculty picking a science project that interested you?
  A: No I never did. If you are go to sciencebuddies.com walter I do not know what answer you were ...
Biology11/12/2009John Locke
  Q: Does Euglena have Mitochondria? I know most of them have Chloroplasts, and that supplies the the ...
  A: Euglena does indeed have mitochondria, as do all eukaryotic organisms. Mitochondria serve the same ...
Chicken breast worms11/10/2009Dana Krempels, Ph.D.
  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, ...
pregnancy11/10/2009Dana Krempels, Ph.D.
  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 ...
pregnancy11/10/2009John Locke
  Q: my period started today so which day will i ovulate?
  A: The menstrual cycle lasts around 28 days in most cases, with a variation of about one week. Within ...
mitosis11/9/2009John Locke
  Q: In mitosis, how many chromosomes do you have when you have finished replicating all of the DNA? In ...
  A: Understanding the terminology related to mitosis/meiosis can be confusing and difficult, but a solid ...
mitosis and meiosis11/9/2009Walter Hintz
  Q: You previously answered a question that I had and was able to clear up my misunderstanding. However, ...
  A: Congratulations for going back to school. Replication means making exact copies so during mitosis ...
biology- chromosomes (mitosis &meiosis)11/8/2009Walter Hintz
  Q: I have a question, I am trying to determine if the 3rd one of these is actually a trick question?? ...
  A: OK Shannon; T0 start with this is not a trick question but it is a bad question because all cells ...
genes11/5/2009Dana Krempels, Ph.D.
  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 ...
help...reallly important11/5/2009John Locke
  Q: Cumulative Oxygen Consumed (mL) ______________________________________________ Time ...
  A: I'm not entirely sure what you're asking here, but I'll tell you what I think. If you need to plot ...
eye colour genetics11/4/2009Dana Krempels, Ph.D.
  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 ...
Define 'Preformed' Organic Molecules as Applies to Heterotrophs11/4/2009John Locke
  Q: Can you please define 'preformed,'as applies to heterotrophs...obviously we can't convert sunlight ...
  A: Your interpretation is correct: heterotrophs are defined by their consumption of complex organic ...
digestive system11/4/2009Walter Hintz
  Q: The human large intestine is the site of a symbiotic relationship.explain.
  A: I just answered this question froma guy in Canada. When two separate species live togethe rfor ...
the digestive system11/4/2009Walter Hintz
  Q: i do not understand this question The human large intestine is the site of a symbiotic ...
  A: Our intestine is occupied with species if bacteria that are symbionts. Symbiosis is the living ...
knee problems in Zulu people11/3/2009Dana Krempels, Ph.D.
  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 ...
Urine11/3/2009John Locke
  Q: How is the urine of someone with damage to their cells in the glomerulus and glomerular capsule ...
  A: The function of the glomerular cells is to provide a first-pass filter for the blood plasma as it ...
Diabetes11/3/2009Dana Krempels, Ph.D.
  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 themselves11/1/2009Dana Krempels, Ph.D.
  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 ...
Circulation10/31/2009John Locke
  Q: First let me say I am grateful to have found this website and appreciate your expertise and ...
  A: Your question is a fundamental one about the anatomy and physiology of the heart, and it's important ...
Viable offspring from transgenic organisms10/31/2009Dana Krempels, Ph.D.
  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 ...
bilogy10/30/2009Walter Hintz
  Q: why does natural selection acts on the Phenotype and not the genotype of an organism
  A: The phenotype is the expression of the genetic code and it is the genetic makeup that natural ...
Hooves10/29/2009Dana Krempels, Ph.D.
  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 ...
interview10/27/2009Walter Hintz
  Q: I was wondering if you would be interested in answering an interview? I am doing a project on what ...
  A: 1 Mostly gram positive rod shaped bacteria. Bacillus species. Also harmless staph species 2 The ...
biology and physiology10/27/2009Walter Hintz
  Q: What are the changes in body structures and functions which dont let the dead person come to life ...
  A: Cellular activity depends upon the proper functioning of the cellular membranes and these activities ...
Blonde Asians10/27/2009Dana Krempels, Ph.D.
  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?10/26/2009Dana Krempels, Ph.D.
  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 ...
biology- energy10/25/2009Walter Hintz
  Q: I am am doing a study of comparison on an energy drink (red bull and pepsi) and what some of the ...
  A: 1. The combo of high sugar and caffeine speeds up thr metabolic rate resulting in greater energy ...
question about mutation10/24/2009Dana Krempels, Ph.D.
  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!!10/23/2009Dana Krempels, Ph.D.
  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- Genetics10/23/2009Dana Krempels, Ph.D.
  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 yellow10/23/2009Dana Krempels, Ph.D.
  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 color10/21/2009Dana Krempels, Ph.D.
  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 ...

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Active Experts:
Walter HintzJohn LockeJoy Ramos
Paras AnandChris BemesChris Larsen
Dana Krempels, Ph.D.  

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