UMass Amherst ANTHRO 103 - Origins of Modern Humans (2 pages)

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Origins of Modern Humans



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Origins of Modern Humans

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Hypotheses on the origins of modern humans


Lecture number:
23
Pages:
2
Type:
Lecture Note
School:
University of Massachusetts Amherst
Course:
Anthro 103 - Human Origins and Variation GenEd: BS
Edition:
1

Unformatted text preview:

Lecture 23 Outline of Last Lecture I Neandertals Outline of Current Lecture II Origins of Modern Humans A Hypotheses Current Lecture Out of Africa hypothesis Homo sapiens is a young species that came out of Africa Other hypothesis Original population was in Africa Big population crash extremely small population Anthro 103 1st edition Lost a lot of genetic diversity Genetic drift bottleneck Founder population for the rest of Homo sapiens Explains why humans are genetically very similar There is almost no Neandertal DNA in contemporary Africa Subset leaves Africa and meets subset that left Africa earlier Neandertals Intermingle with Neandertals so subset that left Africa now has mixed DNA These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute Homo sapiens in Africa never left and interacted with Neandertals so there isn t Neandertal DNA Genetic diversity today is greatest in Africa Origins of Modern Humans Modern genes anatomy and culture appeared in Africa first Almost extinct small population Modern populations diversify in Africa One small modern population left in Africa Replaced earlier hominin populations with modest gene flow between Weren t really replaced were assimilated we have Neandertal DNA



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