Africans' ability to digest milk linked to spread of cattle raising

A new study -- constituting the largest investigation ever of lactose tolerance in geographically diverse populations of Africans -- investigated the genetic origins of this trait and offers support to the idea that the ability to digest milk was a powerful selective force in a variety of African populations which raised cattle and consumed the animals' fresh milk.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...