[Campbell Biology P.1070] Refer to Figure 46.3b and the accompanying text. During a typical r... | Practice Question

Refer to Figure 46.3b and the accompanying text. During a typical reproductive cycle of Aspidoscelis uniparens , what is the sequence of hormone levels and behaviors?

  • A: High progesterone -> female behavior -> ovulation -> high estradiol -> male-like behavior.
  • B: High estradiol -> female behavior -> ovulation -> high progesterone -> male-like behavior.
  • C: Ovulation -> high estradiol -> male-like behavior -> high progesterone -> female behavior.
  • D: High estradiol -> male-like behavior -> ovulation -> high progesterone -> female behavior.

Explanation

The text explicitly states: "An individual adopts female behavior prior to ovulation, when the concentration of the hormone estradiol is high, and then switches to male-like behavior after ovulation, when the concentration of the hormone progesterone is high." This sequence is depicted in Figure 46.3b as well.