It is important to remember that genetic distances are measured using a property of meiosis

It is important to remember that genetic distances are measured using a property of meiosis

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It is important to remember that genetic distances are measured using a property of meiosis (genetic recombination) that varies from one organism to another. The relationship between genetic distance and actual physical distance can be summarized in this way: G = p x r The actual relationship between genetic distance in cM and physical distance in base pairs (bp) depends on the recombination rate and is different for different organisms
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Unformatted text preview: For example: Human: 1.3 cM/Mbp Yeast: 360 cM/Mbp Sometimes recombination rates in the male and female of a species are different. In Drosophila there is no recombination in the male so the genetic distance between markers on the same chromosome are always zero when examined by meiosis in the male. In humans the recombination rate (and therefore map distances) in the female are twice that of the male....
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