The pressures of _______ favor the evolution of large testes and large sperm quantities, an extreme example of which is the _______.

Question

Quizplus · Accepted Answer

Sperm competition occurs when the sperm of two or more males could potentially fertilize a female's egg, leading to adaptations such as larger testes and greater sperm production to increase a male's chance of successful fertilization. The boar is an example of an animal with large testes and high sperm quantities, which are adaptations to sperm competition.

The Pressures of _______ Favor the Evolution of Large Testes