Among gorillas, chimps and humans, chimps have the largest testes and the most vigorous sperm in...

Among gorillas, chimps and humans, chimps have the largest testes and the most vigorous sperm in terms of swimming speed and endurance, gorillas have the smallest testes and least vigorous sperm, and humans are in between. What does that tell us about female mating behavior now or in the relatively recent evolutionary past?

A) Gorilla females mate relatively often with multiple partners; chimps are nearly monogamous; and on occasion, human females may have multiple partners during a reproductive cycle.

B) Trick question! Only males have testes and sperm, so testes size and sperm vigor cannot tell us anything about female behavior.

C) During a reproductive cycle, chimp females mate relatively often with multiple partners; gorillas are nearly monogamous; and on occasion, human females may have multiple partners.

D) Chimp females mate relatively often with multiple partners, but like humans, gorillas are nearly monogamous.

Expert Solution

Statement A:- Incorrect

Reason:- Gorilla and chimpanzees are polygamous and have multiple sexual partners throughout their lives. Whereas human's pattern of serial monogamy is observed among the western people.

Statement B:-Correct

Reason:- Above the sexual strength and endurance of gorilla, chimpanzee and human is compared which indicated that chimpanzee has the largest testes with great endurance and gorillas have the smallest testes with least endurance and sexual strength. Whereas humans are intermediate with medium-sized testis and good endurance. The entire discussion is made about the male reproductive system and strength and there is no mention of the female reproductive system and pattern.

Option C:Incorrect

Reason:-Statement is incorrect as gorillas and chimpanzees both are polygamous and they mate with multiple partners. Whereas human females may have multiple partners occasionally.

Option D:-Incorrect

Reason:-Chimpanzee and gorilla both are polygamous and humans show serial monogamy patterns occasionally.

gladiator answered 2 years ago

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