If a fetus contains an X and a Y chromosome but a defective SRY gene, they will develop
A) into a female because testosterone is not present.
B) into a male because testosterone is not present.
C) into a female because testosterone is present.
D) into a male because testosterone is present.
E) into a hermaphrodite due to the presence of estrogen and testosterone.

Question

Quizplus · Accepted Answer

The SRY gene on the Y chromosome is responsible for the formation of testes and the production of testosterone. If the SRY gene is defective, testes and testosterone will not be produced, and the individual will develop as a female, as there is no other hormone present to counteract the effects of estrogen.

If a Fetus Contains an X and a Y Chromosome