Scientists figure out how our penises evolved

[Pernicious]

Most guys probably don't sit around the locker room pondering the finer points of how the male penis evolved, so leave this one to Harvard researchers: The mystery is solved thanks to … lizard limbs.

Yup, Harvard scientists investigating the origin of external genitalia have found a link relating to the development of limbs in a variety of animals. Scientists initially hoped to discover why snakes didn't grow limbs, the Boston Globe reports.
But they instead found that embryonic cells—which produce hind limbs in lizards, limb buds in snakes, and "tail-bud" tissue in mammals—form genitalia with a signal from something called a cloaca.
As Discovery reports, cloaca is "tissue that eventually develops into the urinary and gut tracts." When they transplanted a cloaca onto hind limb cells in a chicken embryo, eureka—genital-like buds formed.

http://www.foxnews.com/science/2014/...nises-evolved/

[darin]

The stupidity of "scientists" astounds me.

[Tyr-Ziu Saxnot]

Most guys probably don't sit around the locker room pondering the finer points of how the male penis evolved, so leave this one to Harvard researchers: The mystery is solved thanks to … lizard limbs.

Yup, Harvard scientists investigating the origin of external genitalia have found a link relating to the development of limbs in a variety of animals. Scientists initially hoped to discover why snakes didn't grow limbs, the Boston Globe reports.
But they instead found that embryonic cells—which produce hind limbs in lizards, limb buds in snakes, and "tail-bud" tissue in mammals—form genitalia with a signal from something called a cloaca.
As Discovery reports, cloaca is "tissue that eventually develops into the urinary and gut tracts." When they transplanted a cloaca onto hind limb cells in a chicken embryo, eureka—genital-like buds formed.

http://www.foxnews.com/science/2014/...nises-evolved/

So a bunch of proudly gay scientists asked themselves--How do we grow bigger wieners..
--Tyr

[darin]

What they did was "discover" something that triggers cells into growing genitalia. That has nothing to do with anything 'evolving'. I'd ask them "when the first cloaca cell magically 'evolved' from non-cloaca cells...what was that single cell's 'evolutional advantage' promoting more of those single cells to form?"

[aboutime]

What they did was "discover" something that triggers cells into growing genitalia. That has nothing to do with anything 'evolving'. I'd ask them "when the first cloaca cell magically 'evolved' from non-cloaca cells...what was that single cell's 'evolutional advantage' promoting more of those single cells to form?"

That explains everything!