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To: carranza2 who wrote (25793)	11/28/2007 9:13:57 AM
From: Maurice Winn	Read Replies (2) \| Respond to of 218189

C2, you just repeated what I said using different words. We can be quite precise about just how small the gene pool was leaving Africa compared with the gene pool staying in Africa. One woman left Africa 90,000 years ago and was the mother of all. One man left Africa 30,000 years ago and was the father of all. Two people is not a very big gene pool compared with the swarms left behind in Africa. Ipso facto, they were different from those who stayed because they were the ones with "adventurer genes". New Zealanders, having been self-selected adventurers ever since, are notably peripatetic. Those lacking such proportions of adventurer gene stayed at places along the way. More people subsequently left Africa too, bringing out more genes, and maybe so many came that the difference is small. But filling empty space is a LOT different from warring and mating with neighbours. Finding a huge new zone to fill results in very rapid population expansion. Battling for a niche in neighbouring tribe gene pools is more arduous, though female primates are always keen to take the job on and the males in the neighbouring tribes are happy to oblige. As you added, the exigencies of life outside Africa thinned the ranks, making some DNA which came out subsequent to "Mum" and "Dad" untenable. Short and round is much better for life in the ice than long and skinny, which is good for cooling in the tropics, and running fast after game and away from pursuing hippos. Mqurice