There's a graph that may help illuminate the issue here:hadespussercats wrote:You're right. At least from what I've understood of what I've read, genes don't show racial difference-- race is a cultural and social construct. (Though I'm a little unclear on how to resolve that with things like sickle-cell anemia or certain congenital disorders that seem to occur in a race-specific way.)
http://infoproc.blogspot.com/2010/08/connect-dots.html
Whether that graph shows races or just continuous geographic variation is probably in the eye of the beholder.
But does it make any difference? If race has a genetic component rather than being purely a cultural and social construct, does that suddenly make it okay to be racially bigoted? I would think not.