Which hormone is the primary determinant of whether a baby will develop male or female external genitalia?
A) progesterone
B) human chorionic gonadotropin
C) testosterone
D) estrogen

Question

Quizplus · Accepted Answer

Testosterone produced by the testes in male fetuses is the primary determinant of whether a baby will develop male or female external genitalia. In the absence of testosterone, the fetus will develop female genitalia. Progesterone, human chorionic gonadotropin, and estrogen play important roles in pregnancy but do not determine fetal genitalia development in the same way as testosterone.

Which Hormone Is the Primary Determinant of Whether a Baby