2011-05-23, 11:25 PM
http://en.wikipedia.org/wiki/Natural_selection
Also, while the traits of Africans are the more dominant, they're not necessarily optimal to survival outside of Africa.
Different subspecies of humans evolved because their particular adaptations were more advantageous to survival in different climates, and in many cases throwbacks were weeded out by cultural selection until recessive were breeding with recessive until the theoretically more dominant genes were diluted out.
Also, while the traits of Africans are the more dominant, they're not necessarily optimal to survival outside of Africa.
Different subspecies of humans evolved because their particular adaptations were more advantageous to survival in different climates, and in many cases throwbacks were weeded out by cultural selection until recessive were breeding with recessive until the theoretically more dominant genes were diluted out.
It's not having what you want - It's wanting what you've got.