The prenatal development of the external male genitalia requires the presence of
A) estradiol.
B) melatonin.
C) alpha-fetoprotein.
D) dihydrotestosterone .
E) anti-Mllerian hormone.
Question 2
Which of the following pairs represent an example of a primary sex characteristic and an example of a secondary sex characteristic?
A) penis; beard growth
B) enlarged breasts; wide hips
C) testes development; ovaries
D) clitoris; ovaries
E) deep voice; beard growth