Gorillas and orangutans have singlemale breeding systems whe

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? No. The data only demonstrate that testes size increases with increasing body size, but they do not address the hypothesis regarding mating systems. Yes. Testes size increases with body weight, but in multi-male systems, testes size is disproportionately larger. Yes. Larger males have larger testes, which supports the hypothesis. No, testes size decreases as the number of mates increases.

Solution

No . the data only demonstrate that the testes size increases with increasing body, but they do not address the hypothesis regarding mating systems.This can be explained as the ruling male cannot control the access to all the females and the other members of the group may mate and hence the size of the testes can be explained only in relation to size and not to the breeding systems.