Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Why Men Don't Have Spines on Their Penises

sciencehabit (1205606) writes | more than 3 years ago

Science 4

sciencehabit (1205606) writes "Most male mammals wield a penis covered with spines made of keratin, the same material that forms fingernails, to sweep out competitors' sperm and irritate a female into ovulating. Even chimpanzees, our closest relatives, have penile spines. So why don't men? A new study suggests that this feature disappeared due to a chunk of DNA that went missing after our evolutionary divergence from chimps. The researchers have identified another DNA deletion that may have contributed to humans' bigger brains."
Link to Original Source

Sorry! There are no comments related to the filter you selected.

We use... (0)

Anonymous Coward | more than 3 years ago | (#35433390)

...ribbed condoms! FTW!

Does this explain... (0)

Anonymous Coward | more than 3 years ago | (#35433506)

...why so many people that I've met are spineless pricks?

Make sense (0)

Anonymous Coward | more than 3 years ago | (#35433878)

It makes sense - smaller penis, bigger brain. If it wasn't for this evolutionary step, we would never have Bill Gates' and Steve Jobs' of our generation.

Natural selection..... (1)

ZosX (517789) | more than 3 years ago | (#35437166)

It would make sense that females would prefer the men without spines......

Check for New Comments
Slashdot Login

Need an Account?

Forgot your password?