Genetic Errors Nixed Penis Spines, Enlarged Our Brains

Shared by Mystech

I will not make jokes about “what men think with”. I will not make jokes about “what men think with”. I will not make jokes about “what men think with”.

Geneticists have linked the physical appearance of humans to patches of DNA lost in the 5 million years since we shared a common ancestor with chimpanzees. One loss prevented men from growing penile barbs, which chimps possess. Another enlarged some regions of our brain.

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Posted by Mystech March 9, 2011