ANTHROP 1AA3 Lecture 24: 1AA3 - Lecture 24
24 Mar 2017
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Document Summary
Homo naledi (~3mya: a topic of debate; does it represent a whole different species or is it a different earliest species, tools are not related to this fossil. Homo erectus larger body size less sexual dimorphism: ~2-05 mya, wide array of tools, bigger brains (800-1250cc, exhibit smaller traits reduction of teeth size. Replacement model: recent african evolution model, based on mitochondrial dna. Assimilation model: aspects of both of the previous hypotheses, modern humans evolve and leave africa 100-200 kya (recent, h erectus and h sapiens populations interbreeding, did have gene flow. Neanderthal sites: use of teeth as tools, large noses. Isolation from gene flow with other contemporaneous populations because of glacial. Most humans have a little neandertal in them: compared mitochondrial dna, neanderthals in western europe are more related to one another than they are to us, neandertal genome sequenced, 1-4%of nucler dna is shared.
