Re: So, have I got this straight?
"Various studies have shown that there is more genetic diversity in Africa than the rest of the world combined but it is better stirred in the rest of the world."
Yeah I remember seeing a program with Prof Alice Roberts a while back where she talked about the genetic family tree of humans. Within Africa is was a full tree but everyone leaving Africa came from a single branch. I think it was based on some of the first genetic analysis done on people all round the world, so they could see that looking at people outside of Africa they have a certain common ancestry, but when doing the same comparison for people across Africa the common ancestry was much further back in time. Of course this was quite a few years ago, so with more recent discoveries it may no longer be accurate.