Biology/Questions
| Subject | Date Asked | Expert |
| unknown microbe | 12/7/2011 | Walter Hintz |
| Q: I have found my unknown is gram + endospore former, rod. I am sure it is bacillus but I can't really ... A: B. cereus colonies are dull and more widespread then B. subtilis.B. cereus also occurs in chains. It ... | ||
| Routine Blood tests | 12/6/2011 | Chris Larsen |
| Q: I went for a flu shot back in September 2011. My PCP took routine blood tests but I did not hear ... A: I understand what you are saying and at the end of the day, it's your health. So ultimately the ... | ||
| High hemoglobin levels? | 12/4/2011 | Dana Krempels, Ph.D. |
| Q: I went for a flu shot back in September 2011. My PCP took routine blood tests but I did not hear ... A: I can't tell you why your physician waited so long to contact you. Only she can tell you that. I ... | ||
| High hemoglobin levels? | 12/3/2011 | Dana Krempels, Ph.D. |
| Q: I went for a flu shot back in September 2011. My PCP took routine blood tests but I did not hear ... A: Well, as almost all web sites (including NIH and other reliable sources) will tell you, the "normal" ... | ||
| High hemoglobin levels? | 12/3/2011 | Dana Krempels, Ph.D. |
| Q: I went for a flu shot back in September 2011. My PCP took routine blood tests but I did not hear ... A: When she said "slightly" elevated hemoglobin, did she give you a number? If your hemoglobin is very ... | ||
| Routine Blood tests | 12/3/2011 | Chris Larsen |
| Q: I went for a flu shot back in September 2011. My PCP took routine blood tests but I did not hear ... A: First and foremost, your physician has knowledge of your medical history so none of what I tell you ... | ||
| Routine Blood tests | 12/3/2011 | Walter Hintz |
| Q: I went for a flu shot back in September 2011. My PCP took routine blood tests but I did not hear ... A: It seems to me that there is no serious health problem here but I have not seen the results of the ... | ||
| nerve impulses and myelin sheath | 12/3/2011 | Walter Hintz |
| Q: why doesn't the nerve impulse go backward? why doesn't the invertible animals have myelin sheath? A: I am not sure what you mean by backward. Nerves go to and from the central nervous system;sensory ... | ||
| Biology Questions? | 12/1/2011 | Dana Krempels, Ph.D. |
| Q: How are you? I have a quick question. I am trying to find some helpful websites that will assist me ... A: Here's my own web site I use to help my Evolution and Biodiversity students understand the ... | ||
| Biology Questions? | 12/1/2011 | Walter Hintz |
| Q: How are you? I have a quick question. I am trying to find some helpful websites that will assist me ... A: I see no need to research this topic further on the internet. The ideas of hypothesis and theories ... | ||
| DNA replication | 11/30/2011 | Dana Krempels, Ph.D. |
| Q: I am Mr Washington. Since this is my first time learning about DNA, I hope you can help me. During ... A: Washington, The problem is that the enzymes that facilitate DNA replication can add incoming ... | ||
| Ref: question | 11/28/2011 | Dana Krempels, Ph.D. |
| Q: Good day Can you tell me if the genetic differences among different races and ethnic groups is ... A: There is no single study that tells us that the concept of race is superficial. However, there are ... | ||
| cells | 11/28/2011 | Walter Hintz |
| Q: Explain how cell division is linked to cell theory? If you have time, what time of the day or night ... A: All living things are made up of cells. This is the basic statement about cell theory but we also ... | ||
| bones | 11/26/2011 | Dana Krempels, Ph.D. |
| Q: why do we need bone dissolving cells? A: Bone is remodeled constantly as we grow and develop, as our bodies change in response to ... | ||
| Genetic basis for Dandy Walker Syndrome | 11/24/2011 | Dana Krempels, Ph.D. |
| Q: I have recently found out that I am pregnant with my first child. I have two younger brothers, one ... A: While Dandy-Walker Syndrome is congenital, its genetics are complex and not yet fully understood. ... | ||
| Bacteriophages!!! | 11/24/2011 | Chris Bemis |
| Q: I am Mr Washington. Well, I have a pretty stupid question that plagues me everytime I read about ... A: Both bacterial cells and animal (eukaryotic) cells are capable of both cell division (duplication), ... | ||
| Bacteriophages!!! | 11/24/2011 | Chris Bemis |
| Q: I am Mr Washington. Well, I have a pretty stupid question that plagues me everytime I read about ... A: Our white blood cells are not self-replicating like bacteria. Rather, they only self-duplicate (by ... | ||
| Ref: question | 11/22/2011 | Dana Krempels, Ph.D. |
| Q: Good day Can you tell me if the genetic differences among different races and ethnic groups is ... A: There is more genetic variation among members of a single race of humans than there is between ... | ||
| Aneurysms | 11/21/2011 | Walter Hintz |
| Q: I'm sorry to have to dump this question on you, but on this site anyway the MDs seem as if there are ... A: I believe that it is true that they are more common in women but I am not sure about the heredity ... | ||
| mitochondrial damage and schizo-affective disorder in progeny | 11/20/2011 | Dana Krempels, Ph.D. |
| Q: My daughter was diagnosed schizo-affective/bipolar two months prior to her suicide (the direct ... A: I am very sorry about the tragedy you have suffered. Unfortunately, there is no way to know exactly ... | ||
| Is there a difference between schizophrenia and multiple personality disorder? | 11/20/2011 | Dana Krempels, Ph.D. |
| Q: Is there a difference between schizophrenia and multiple personality disorder? A: Kristian Yes there is a difference. You can read about schizophrenia here: ... | ||
| Development of human | 11/19/2011 | Dana Krempels, Ph.D. |
| Q: As per Darwin human is developed from monkey so then why all monkeys are not developed as a human? ... A: It is a common misconception that Darwin said humans evolved from monkeys. This is not what he ... | ||
| Are we too many people on Earth or are the resources allocated wrong? | 11/18/2011 | Dana Krempels, Ph.D. |
| Q: Are we too many people on Earth or are the resources allocated wrong? A: In my opinion, there are far too many humans on earth, and we do run the risk of destroying our ... | ||
| Sense of taste | 11/17/2011 | Walter Hintz |
| Q: My uncle had an operation when he was younger which left him without the sense of taste. I know in ... A: There is a difference between taste and flavor. There are sweet,sour,bitter and salty taste buds in ... | ||
| Apples | 11/17/2011 | Walter Hintz |
| Q: why do apples turn brown after you slice them. i need soem info on this for my science fair research ... A: The apples contain an enzyme called PPO. When the apple is cut the tissue is exposed to Oxygen abn ... | ||
| Hyperventilation | 11/16/2011 | Dana Krempels, Ph.D. |
| Q: For a person who has hyperventilated, why does breathing into a paper bag restore normal blood ... A: This sounds like a homework question for a physiology class, so I'm not going to provide the answer ... | ||
| How do we know that animals don't have feelings? | 11/16/2011 | Dana Krempels, Ph.D. |
| Q: How do we know that animals don't have feelings but just are hedonistic? A: Non-human animals *do* have feelings. Emotions are adaptive, and the more complex vertebrates ... | ||
| Help! | 11/7/2011 | Walter Hintz |
| Q: Why do zoos help with the perservation of a animal?? A: In my opinion allows people who would not otherwise see an animal closeup interact with them and ... | ||
| What changes might enable IR vision in humans? | 11/7/2011 | Walter Hintz |
| Q: Mr. Hintz. I'm writing a story involving a character who can only see in the infrared area of the ... A: The human eye has sensory receptors in the retina attuned to wave lengths within a limited range. ... | ||
| Human Being Hair Color due to Aging. | 11/5/2011 | Walter Hintz |
| Q: http://en.wikipedia.org/wiki/Human_hair_color We observe that with age, Some Human Beings Hair ... A: Pigmentation in mammals is due to melanin. Different concentrations of melanin cause darker and ... | ||
| Meat | 11/5/2011 | Walter Hintz |
| Q: Iam curious, i have heard that vegetarians are healthier than meat eaters, but the meat eaters don't ... A: You probably heard that vegetarians are healthier from vegetarians. It is true they are less likely ... | ||
| Genetics Interview | 10/17/2011 | Dana Krempels, Ph.D. |
| Q: my name is Allyson and I'm doing a Senior Project right now for my English class and I was wondering ... A: 1) Are you currently working or have previously worked in the field of Genetics? Not in genetic ... | ||
| Biological Clock / Circadian rhythm. | 10/15/2011 | Dana Krempels, Ph.D. |
| Q: http://en.wikipedia.org/wiki/Circadian_rhythm Most of the Offices,Industries are working in Day ... A: Yes, you are correct. Humans have a natural Circadian rhythm, which can be viewed here: ... | ||
| eye color inheritance | 10/11/2011 | Walter Hintz |
| Q: I have hazel eyes. Largely green (kind of an aqua) with a golden orange center. Both of my ... A: It is quite likely that you are carrying genes for both light and dark pigmentation. Remember I told ... | ||
| eye color inheritance | 10/8/2011 | Walter Hintz |
| Q: I have hazel eyes. Largely green (kind of an aqua) with a golden orange center. Both of my ... A: Hair, skin and eye colors all depend upon the amount of melanin and the production of melanin is ... | ||
| the biology of radial symmetry | 10/6/2011 | Dana Krempels, Ph.D. |
| Q: Dr. Krempels, I am curious to know if there is some molecular reason why some animals such octopi ... A: This is one of the HUGE questions in evolutionary biology. There is not a single protein involved ... | ||
| heavy metals | 10/6/2011 | Walter Hintz |
| Q: Mr. Hintz, I hope this s not too odd a question or outside your experience, but I'll throw it at ... A: The main metals we ingest are iron and zinc. We get them into our system from many foods both ... | ||
| Biology Sac Fungi (AScomycota) | 10/5/2011 | Dana Krempels, Ph.D. |
| Q: 1. I need to know why fungi call Ascomycota or sac fungi.? I know that it's because od the shape ... A: It is because the small, specialized structure in which meiosis takes place has somewhat the ... | ||
| Small worms in my sink | 10/5/2011 | Walter Hintz |
| Q: I just moved to my new place, and i have notice this little like flies in my bathroom. They re ... A: These sound like drain flies. Tje worms are the larvae. They breed in in the sink and bath drains. ... | ||
| Human Species Name | 9/30/2011 | Walter Hintz |
| Q: Walter... My name is Al Cagle, and I am an expert on military history on this board. Recently I ... A: 1. The only thing we know for sure is that evolution is a continuous process so some changes will ... | ||
Biology
Answers by Expert:
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.
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