Choose the correct statement regarding estrous and menstrual cycles.
A)Animals with estrous cycles are sexually receptive only when they are ovulating.
B)Menstrual cycles are longer than estrous cycles.
C)Copulation can only occur during ovulation in the menstrual cycle.
D)The lining of the uterus is shed during menstruation and estrous.
E)Ovulation only occurs in animals with a menstrual cycle.

Question

Quizplus · Accepted Answer

Animals with estrous cycles are only sexually receptive during ovulation. In contrast, humans, great apes, and some bats have menstrual cycles in which sexual receptivity and fertility are not limited to a specific time during the cycle. B is incorrect because menstrual cycles tend to be shorter than estrous cycles, lasting around 28 days in humans compared to several months in some animals with estrous cycles. C is incorrect because copulation can occur outside of ovulation in menstrual cycles. D is partially correct, as the lining of the uterus is shed during menstruation but not estrous. E is incorrect because ovulation occurs in both estrous and menstrual cycles.

Choose the Correct Statement Regarding Estrous and Menstrual Cycles