Hemophilia, Color Blindness, and Duchenne Muscular Dystrophy Occur More Often

Multiple Choice

Hemophilia, color blindness, and Duchenne muscular dystrophy occur more often in males than females.Why?

A) These traits are carried only on the Y chromosome.
B) The Y chromosome has been deactivated in males with these conditions.
C) Testis-determining factor (TDF) causes these conditions.
D) These conditions develop due to the lack of estrogen and progesterone.
E) These traits are carried only on the X chromosome, and since there is no matching gene on the Y chromosome to compensate, the traits are expressed more readily in males.