Gonads Begin to Develop __________ Weeks After Fertilization

Question

Gonads begin to develop __________ weeks after fertilization.
A) 2 to 3
B) 5 to 6
C) 8 to 9
D) 20 to 24
E) 36 to 38

Accepted Answer

Gonads begin to develop around 5 to 6 weeks after fertilization. At this stage, the embryo's genital ridge begins to form, which eventually develops into either testes or ovaries depending on the presence or absence of the Y chromosome.