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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: Cogito Ergo Sum who wrote (25813)	11/28/2007 9:23:15 PM
From: Maurice Winn	Read Replies (1) \| Respond to of 218200

Two people is ipso facto a tiny gene pool. The mother left 90,000 years ago, the father 30,000 years ago. Additional genes after those two came from follow-on emigrants from Africa, who would necessarily have been relatively few compared with the burgeoning populations who were filling the world outside Africa. <I don't see how we can say that a smaller gene pool necessarily left Africa though..> Using the 3:1 ratio of male to female, we could probably calculate just how many extra genes came out after those first two. Or, there is probably gene diffusion rate data somewhere which describes how quickly genes diffuse from group to group in balanced tribal societies. When one bunch of males attacks and kills off those of another tribe, they replace a lot of DNA. Which is then made up by rebreeding up to over-population again, requiring another "ethnic cleansing" to bring numbers back into balance again. Since women started having babies at about age 14 and stopped at about age 40 or 45, with 2 or 3 years between, we could calculate maximum repopulation rates if things were really good. Disease, famine, predators and other deaths reduce that maximum. When there was open-country expansion into the Americas, there would have been easy population expansion for thousands of years, limited only by natural problems rather than over-population territorial conflicts. Mqurice