If a human inbreeds with a relative, how distant does the relative have to be before the homozygosity in the child is no higher than if the mate were randomly chosen from the global population?
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In "The Selfish Gene" Dawkins claims a relatedness factor of 1/128 to be pretty much the same as the baseline chance for the rest of the population to have the same gene, so that would be a third cousin. (Or your great great great great great grandparents, though an incestuous relationship with them is quite unlikely I think.) I'm not sure where he got that from though. |
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