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None of that applies to race. Knowing someone's "race" tells you absolutely nothing about them. If I know an organism is of genus Canis that it has pointy teeth, a muzzle, and claws that don't retract. If I know a human is of race "African" or "black", what do I really know? That they have dark skin? Not always. That they have broad noses? Not always. That they have big d*cks? Not even close to always.
Well, given the mechanism of genetics, you can expect geographically isolated groups of individuals to have different frequencies of certain alleles after a period of time. What does this have to do with any notions of racism, superiority, inferiority, or any other social interpretation.. nothing really. We're all different.
It may certainly be that there is more variation between individuals in a population than between populations overall, but that doesn't mean that there are not distinct groupings of human beings which share a similar set of certain allele frequencies or fixations of a small set of more or less arbitrary genes.
But who cares? We should be mature enough to admit that races do indeed exist. So some of us have a greater frequency of a certain gene or genes which perhaps increase pigmentation, or a fixed gene possibly which is infrequent or perhaps non existent (unlikely) in another population which slightly changes facial bone structure.
What does all this mean? Nothing really other than "races" as groups of individuals have slightly different and visibly recognizable rates of expressions of a few alleles.
[This message has been edited by Rationalist, 10-25-2003]