![]() ![]() One drop of black blood was enough to render someone a black person in the Untied States. I think what's being assumed as a background condition is the rule of hypodescent, which assigns a mixed-race child to the identity of the lower status parent. Some of the emails I receive imply strongly that people are surprised at the relatively lack of potency of colored blood, especially black blood. But first, one particular issue that I want to bring up. So I'm going to answer the email above in some more detail below. All that being said the above posts and these sorts of jargon-laden assertions really don't mean much to many people. This is the the insight and power which Mendelian principles introduced to our understanding of evolutionary process. The underlying logic is that genetics is discrete, not blending. I've offered more detailed expositions on black white twin pairs. This question is very common: why does my baby look so white? Succinctly the child's ancestors are mostly white (American blacks are on average 20% white, so it is likely that the child is more than 75% European in terms of recent ancestors). What are the odds for this to happen, for us to have a white baby with blond hair and blue eyes? I'm a redhead with greenish brown eyes, my husband has black hair and brown eyes. ![]() Myself (German), I'm white, same with both of my parents and grandparents. His mother is white and his father is black. I have a 19 month old son who is very light skinned, blond hair and blue eyes. On one disturbing occasion someone was appealing to me to clear up the suspicion of non-paternity because of the unexpected outcome of the offspring's appearance! Today I received this email: Sometimes they wonder why their offspring looks the way he or she does. Quite often they are curious as to the possible outcome of their offspring's phenotype. ![]() The most common emails I receive are about hair and eye color, and of these the most frequent source seems to be from individuals in interracial relationships. ![]()
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