Problem set 8 - Natalie Ross Anthropology 005 Introduction...

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Natalie Ross 11/29/10 Anthropology 005 Introduction to Physical Anthropology Problem Set # 8: 1. This question is about Homo sapiens. A. How genetically variable is our species compared to chimpanzees? Chimps are more genetically variable. 85% of human variation is within groups. There is only one species of hominin now. B. How many species of Homo were there 150 KYA? One, it was homo sapiens idaltu. C. What species were they and where did they live? They were Homo Sapiens and they lived in Africa. D. How many species of Homo are there now? One E. How and when did that situation come about? There is only one species of hominin now because of three reasons. - Modern humans killed the others. - All contemporary humans have a recent common ancestor (~.2mya) - There has been too much genetic mixing among existing races to allow them to become different species. 2.  This question is about sexual selection.
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