Am I the only one who has watched Henry Louis Gates' specials on PBS? He did the genetic testing and Don Cheadle is 22% white. I believe Henry Louis was something like a mere 19% black. When they did the swab test on my black Arkansas granddaddy, the predominant countries that came up were Ghana and the Netherlands. Go figure! This is the reality of being an African-American born of the slave legacy--this is nothing new.
As far as Asians and Latinos having kinky hair--yes, due to mixing! Pilipinos, for instance, who have Asian, pacific islander and Spanish ancestry. But don't tell me you know a Chinese person who gets a relaxer.
You can't just put all Asians in one catchall category. And intermixing is a global phenomena, affecting us all.
There is also mixing going on in Africa. Do the people in Tunisia look like the people from La Cote D'Ivoire? There is a lot of genetic diversity. No one said mixing or genetic diversity meant "black/white" only.