http://en.wikipedia.org/wiki/Pelvis
The female pelvis has evolved to its maximum width for childbirth — a wider pelvis would make women unable to walk. In contrast, human male pelves are not constrained by the need to give birth and therefore are optimized for bipedal locomotion.
The female pelvis has evolved to its maximum width for childbirth — a wider pelvis would make women unable to walk. In contrast, human male pelves are not constrained by the need to give birth and therefore are optimized for bipedal locomotion.
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