Anthropolgy5_Traits - Anthro5 18:03

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Anthro 5 18:03 What determines whether a trait is advantageous? The environment, nature “Natural Selection” nature choosing what works, a filter o sorts the alternatives in the population and holds onto whatever works. o Thus, organisms become well adapted to their environments. What works in one environment may fail in others. Hence there are many kinds of creatures Selection is not an engineer, only a tinkerer. Selection cannot create new variants It can only choose among those variants that already exist. And what is advantageous? Any trait that promotes… o Reproduction Survival is a means to an end, not an end in itself. A type of creature that lived a long time but died without reproducing  would disappear. If we say that natural selection “designs” organisms, then it designs them for  reproduction. 
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This note was uploaded on 08/25/2011 for the course ANTH 5 taught by Professor Gaulin during the Fall '07 term at UCSB.

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Anthropolgy5_Traits - Anthro5 18:03

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