An embryo with two X chromosomes will develop female characters because of
A) the presence of female hormones in development.
B) the absence of testosterone during early embryology.
C) the SRY regions of the X chromosomes.
D) maternal substances passed to the zygote during fertilization.
E) human chorionic gonadotropin.

Question

Quizplus · Accepted Answer

The absence of testosterone during early embryology leads to the development of female characteristics in an embryo with two X chromosomes. Testosterone is crucial for male development, and its absence allows the default development pathway, which is female.

An Embryo with Two X Chromosomes Will Develop Female Characters