[Campbell Biology P.548] The text discusses a hypothesis regarding the evolution of female p... | Practice Question

The text discusses a hypothesis regarding the evolution of female preferences for certain male characteristics. What is this hypothesis primarily based on?

  • A: Females preferring male traits that are aesthetically pleasing, regardless of genetic quality.
  • B: The idea that male traits preferred by females are correlated with 'good genes,' indicating a male's overall genetic quality.
  • C: Males evolving showy traits to intimidate other males in intrasexual competition, which females then observe and prefer.
  • D: Female preferences being solely driven by the desire to avoid predation for their offspring.

Explanation

The text states: 'One hypothesis is that females prefer male traits that are correlated with "good genes." If the trait preferred by females is indicative of a male's overall genetic quality, both the male trait and female preference for it will be reinforced because they enhance overall reproductive success.' This directly supports option B.