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Politics : PRESIDENT GEORGE W. BUSH -- Ignore unavailable to you. Want to Upgrade?

To: ManyMoose who wrote (244134)	3/31/2002 3:28:51 PM
From: TigerPaw	Read Replies (2) \| Respond to of 769670

Gene expression is not quite as simple as the original Mendellian experiments were lead to indicate. Very few traits are controlled by a single gene, and some genes, for example fur color in domestic cats, is sex linked. The Mendel formula would indicate that the male (BB) mating with a female (Bw) may pass along the white gene (w) but will never result in a (ww) pair unless there is a spontaneous mutation (or a sneaky white bear that is really the dad). I don't think you can know the color of the mother (Bw) from the given information. It could track the dominant color Brown, or it could result in a different color just as a Blue-Brown eye combination leads to green eyes. In reality fur color is not strictly controlled by genes as was shown by CiCi the first cloned cat, which does not have the same fur markings as it's DNA doner. news.nationalgeographic.com When the gene is expressed as the fetus grows, it may take cues from either the father's DNA or the Mother's DNA at different points in the development. The other bear in your story was white. TP