A polytypic species is one in which there is a lot of phenotypic variation.
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Q43: Because an upright posture helps to conserve
Q44: Sexual dimorphism is less pronounced in modern
Q45: Bipedalism would have allowed early hominins to
Q46: The cranial features of
A.afarensis reflect a diet
Q47: A.afarensis made the footprints at the site
Q49: The earliest known stone tools belong to
Q50: The
A.afarensis fossils show that as recently as
Q52: The genus Homo did not appear until
Q53: Compared to the australopithecines, early Homo had
Q58: Oldowan tools were made by striking flakes
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