Female painted redstarts pair with a male (social mate) and raise their young on

Question

Female painted redstarts pair with a male (social mate) and raise their young on his territory. Females do all the work of rearing offspring, males contribute no parental care. Females may also mate surreptitiously with other males, so that all of the offspring are not fathered by the territorial male. Sexual selection theory would predict that females which mate with additional males do so because:

it increases the female’s fecundity

it increases the female’s fitness

it lowers the risk of acquiring sexually transmitted diseases

it increases offspring survival

it increases offspring fecundity

it increases the female’s fecundity

it increases the female’s fitness

it lowers the risk of acquiring sexually transmitted diseases

it increases offspring survival

it increases offspring fecundity

Explanation / Answer

a. it increases the female’s fecundity

Sexual selection theory would predict that females which mate with additional males do so because it increases the female’s fecundity. So the females can produce more offspring, natural always increases the chances of reproduction.

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