Sexual differentiation, or the process in fetal development of forming either male or female reproductive structures, is controlled by
A) the hormones produced by the gonads.
B) the X chromosome(s) inherited by the fetus.
C) the mother's eating habits.
D) the amount of estrogen present in the mother's uterus.

Question

Quizplus · Accepted Answer

Sexual differentiation is primarily controlled by the hormones produced by the gonads. Specifically, the presence or absence of testosterone and anti-Müllerian hormone secreted by the testes determines the development of male reproductive structures, while in the absence of these hormones, the female reproductive structures develop. Other factors, such as X and Y chromosomes and environmental factors, can also influence sexual differentiation, but the hormone levels are the primary determinant.

Sexual Differentiation, or the Process in Fetal Development of Forming