The earliest trait to separate the hominid line from hominoids was

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     bipedalism
      an expansion in brain size
      dietary changes that resulted in larger bodies
      larger and more complex social groups
asked Jun 29, 2012 in Anthropology by anonymous
    

1 Answer

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bipedalism
answered Jun 30, 2012 by Bioshare ~Top Expert~ (34,070 points)

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