Evolutionary theory suggests that the shape of the penis allows it to remove another lover's sperm from the reproductive tract of a woman.

Question

Quizplus · Accepted Answer

This is known as sperm competition and is a theory supported by evolutionary biology. The shape and size of the penis play a role in removing previously deposited sperm from the female reproductive tract in certain species, such as primates.

Evolutionary Theory Suggests That the Shape of the Penis Allows