image: Crania are ordered (from front to back) from least variable within species to most: Bonobos, Chimpanzees, Humans, Siamangs, Gorillas, Bornean Orangutans and Sumatran Orangutans. view more
Credit: Image courtesy of Roderick Mickens/AMNH.
科研人员报告说，在包括猿与人类在内的12个现存人科动物物种中，一个种内的颅骨形状的变化反映了这个种内的遗传多样性数量，而构成这种遗传多样性基础的过程很可能是诸如遗传漂变和突变等因素，而不是选择或发育约束。
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Journal
Proceedings of the National Academy of Sciences