Sentence examples for evolution of penises from inspiring English sources
The same mechanism could explain how claspers developed in placoderms the extinct, armored fish with the earliest known vertebrate sex organs as well as the evolution of vertebrate penises, researchers say.
Female mate choice could have driven the evolution of larger penises in humans".
I cut a bunch of penises.
There are a lot of penises.
The proliferation of penises is bad for business.
And that parade of penises is driving everyone else away.
Is tweeting photographs of penises a disease?
The mystery of the vanishing bird penis is actually an important question — not just for understanding the evolution of our feathered friends, but for clues it may offer to little-understood human genetic disorders.
The penis is a homologue of the mammalian penis, and its presence in reptiles indicates that this organ arose early in the evolution of the amniotes and prior to the origin of reptiles and synapsids.
