Which hormone is the primary determinant of whether a baby will develop male or female external genitalia?

Question

Quizplus · Accepted Answer

Testosterone is the primary hormone responsible for the development of male external genitalia. In individuals with XY chromosomes, the testes produce testosterone, which stimulates the development of the male reproductive tract and external genitalia. In the absence of testosterone, the embryo will develop female external genitalia. Progesterone and estrogen also play important roles in fetal development, but they do not have as significant an impact on genital development as testosterone. Human chorionic gonadotropin (hCG) is a hormone produced during pregnancy but has no direct role in determining the development of fetal genitalia.

Which Hormone Is the Primary Determinant of Whether a Baby