Which is NOT a Strategy to Explain Monogamous Mating Systems

Question

Which is NOT a strategy to explain monogamous mating systems?
A) mate-guarding hypothesis
B) male assistance hypothesis
C) Fisher's principle
D) female-enforced monogamy hypothesis
E) All the above answers can explain monogamous mating systems.

Accepted Answer

Fisher's principle explains the sex ratio in a population, not monogamous mating systems. It states that the sex ratio will tend to favor the rarer sex in a population because parents of that sex will have a higher average reproductive success.