Fetuses with AIS have an
A) XY genotype and normal, descended testes.
B) XY genotype and normal, undescended testes.
C) XX genotype and normal (yet undescended) testes.
D) XYY genotype and normal, descended testes.

Question

Quizplus · Accepted Answer

Fetuses with AIS (Androgen insensitivity syndrome) have an XY genotype and normal, undescended testes. The testes develop in the abdomen, but the insensitivity to androgens (male hormones) prevents the descent into the scrotum. As a result, the external genitalia appear female, and these individuals are often raised as girls until puberty when lack of menstruation leads to medical investigations revealing their condition.

Fetuses with AIS Have an