Now, were you the poster who has a lot of knowledge of the evolutionary explanation for all this or was that someone else?
Was it you or sam?? that has a bio degree?
Based on that could you explain this utterly bazarre question?
Perhaps before jumping into human evolution you should state your understanding of the evolutionary explanation of how populations change over time. I think you did say you knew a lot but we can't help you sort things out if your basic understanding is a totally screwed up as it appears to be.