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Human races haven't diverged, though. Divergence requires isolation that isn't present in humans. People are incredibly mobile and people of different races fre
by bendmorris 13y ago
Human races haven't diverged, though. Divergence requires isolation that isn't present in humans. People are incredibly mobile and people of different races frequently intermarry, ensuring that any traits that emerge in one get shared with all the others.
- d0 13y agoThat's not strictly true. There are plenty of isolated genetic lines. This is a really big planet. Things like sickle-cell and neurofibromatosis are worth studying only 2-3 generations back as well for example.