A change in peoples senses of taste and smell, digestion, bone structure, skin color and brain function. In gereral is not evolution but rather the mixing of the races and ethnic backgrounds. Look asians are usually short but if you were to mix an asian with a black person, who are usually taller, you end up with a mixed baby - half black half asian (skin diference) Taller asian or shorter black (bone structure) And half nappy hair and half asian hair will mess up his brain funtion. LOL -- but you see my point.