12-4 Notes - Natural Selection at work Smaller individuals...

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Natural Selection at work Smaller individuals with lower metabolic needs require fewer calories to remain healthy fewer calories to remain healthy Fewer calories are available in isolated environments Smaller individuals thus outbreed larger individuals, contributing more of their genes to successive generations Over time, the population will “shrink The Origin of Anatomically Modern Homo sapiens Fully Modern Humans Cranial Features Large brain (1220cc average) Vertical forehead Relatively small brow ridges Relatively small teeth Definite chin Little prognathism Homo Sapiens idaltu (elder) Herto Ethiopia 160 kya Tim White 3 crania found Animal remains with cut marks Population that is on the verge of anatomical modernity but not yet fully Evidence of mortuary practices First homo sapien The near east – Israel
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Mt. Carmel Cave sites Modern homo sapiens Skhul cave 120,000 Homo neanderthalensis Tabun
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This note was uploaded on 07/12/2009 for the course ANT 2511 taught by Professor Sinelli during the Spring '08 term at University of Central Florida.

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12-4 Notes - Natural Selection at work Smaller individuals...

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