According to an evolutionary scientist, what characteristic of the penis would serve an important function related to sperm competition (when the sperm of two or more men is present in the female reproductive tract)?

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Quizplus · Accepted Answer

The coronal ridge, also known as the "cock head," is believed to have evolved as a tool for sperm competition. It is believed that the ridge helps to displace the semen of competitors by trapping it in the female reproductive tract and then removing it during subsequent sexual encounters. This increases the likelihood of a male's sperm to fertilize the female's egg. Factors such as force of ejaculation, sperm count, and penis size may also play a role in sperm competition, but the coronal ridge is believed to be the most important characteristic in this regard.

According to an Evolutionary Scientist, What Characteristic of the Penis