How Men Lost Their Penis Spines

by Stephanie Pappas, Live Science Contributor   |   March 09, 2011

Time to give thanks for your genome: A new study finds that at some point in our evolutionary history, humans lost a stretch of DNA that would have otherwise promoted the growth of spines on the penis.

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Stephanie Pappas

Stephanie interned as a science writer at Stanford University Medical School, and also interned at ScienceNow magazine and the Santa Cruz Sentinel. She has a bachelor’s degree in psychology from the University of South Carolina and a graduate certificate in science writing from the University of California, Santa Cruz.

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