If testes size is correlated with number of sperm produced, under what condition is larger testes size more likely to be evolutionarily advantageous?
A) Females mate with a single male.
B) Males mate with a single female.
C) Females mate with multiple males.
D) Males mate with multiple females.

Question

Quizplus · Accepted Answer

Larger testes size is more likely to be evolutionarily advantageous in conditions where females mate with multiple males. This is because larger testes can produce more sperm, increasing a male's chances of fertilizing the female's eggs in a competitive environment where sperm from different males compete to fertilize the same set of eggs.

If Testes Size Is Correlated with Number of Sperm Produced