Other Genetic Principles

21 - 28 of 28 Answers

March 9, 2006: What is the story with this other kind of DNA--mitochondrial DNA? Only mothers pass it (is that true) and does it have traits or an effect on children? In what way? Oh, where is it?
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November 7, 2005: Since there is a finite number of base-sequences in our DNA and also a finite number of genes (combinations of those base sequences), isn't there a finite number of "possible" human beings? What is that number?
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September 12, 2005: I have some questions about X inactivation. How long after conception does X inactivation take place? Is it possible to artificially induce X inactivation? Might that be useful for males with Klinefelter's syndrome?
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August 17, 2005: I've heard that DNA of adults is different than DNA of an embryo. What's different, and when does the change occur?
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April 28, 2005: Hi I was wondering if you could tell me what is allelic frequency? And can you tell me which allele I have. If my grandmother on my mothers side has blue eyes, my grandfather has green eyes and she and her brother have green eyes too. My father's dad has blue eyes and his mother brown. He has brown eyes but some of his brothers and sisters have green eyes and one I think has blue. Me and my brother both have dark brown eyes. I am the eldest.
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January 27, 2005: I took a physical anthropology class in college and thought the professor told us two examples of "genetic polymorphism" are: #1, some people taste cruciferous veggies as bitter and some don't, #2, some people don't have a platysma muscle. Are these two things true and can you tell me what "genetic polymorphism" means? Thanks!
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October 12, 2004: My boyfriend has 3 sisters whereas I have 2 sisters and no brothers. What are the chances of him and I having a baby boy?
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July 22, 2004: What is a polymorphic micro-satellite? How can the PCR reaction help us determine if the gene is polymorphic or not?
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