HBB, you're incorrect about whether there is a genetic basis for race. The idea that there is no genetic basis for race is an outdated concept with roots in fear of racism. There clearly is genetic basis for race. That's not to say that there's a "Black gene" or a "White gene" or an "Asian gene", but there are sets of genetic expressions that lend themselves to peoples of a certain ancestry -- read: race -- more than others.
The most significant genetic differences are between Eurasian, African, and East Asian peoples.
http://www.washingtonpost.com/wp-dyn...T2009062200350
Yet it's still possible to find genetic nuance within those populations.
http://www.nytimes.com/2008/08/13/sc...in&oref=slogin