Gorillas and orangutans have single-male breeding systems, where females mate wi

Question

Gorillas and orangutans have single-male breeding systems, where females mate with only one male. Chimps, in contrast, have a multi-male breeding system, where females mate with multiple males Evolutionary biologists hypothesize that multi-male breeding systems will favor the evolution of large testes size. Do the data in the figure shown support this hypothesis? Yes. Larger males have larger testes, which supports the hypothesis. No, testes size decreases as the number of mates increases. Yes. Testes size increases with body weight but in multi-male systems, testes size is disproportionately larger. No. The data only demonstrate that testes size increases with increasing body size, but they do not address the hypothesis regarding mating systems.

Explanation / Answer

Yes. Testes size increases with body weight, but in multi-male systems, testes size is disproportionately larger.

Here the relative testes size is showing positive correlation with multiple paternity rates. Above provided data supports the fact that the males in multi male breeding system will have large testes size.

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