Sexual dimorphism: Sexual dimorphism of the pelvic architecture is affected by several factors. Studies have shown that through evolution the shape of the pelvic bones have been determined by not only by genetic but by environmental and cultural forces. Some of the difference can be accounted for by the need for a birth canal but not all. Enjoy this article: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2687900/
Answered 12/19/2015
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