Males Are More Vulnerable to Recessive Gene Disorders Carried on the X

Multiple Choice

Males are more vulnerable to recessive gene disorders carried on the X chromosome in the 23rd position because

A) the female chromosome is dominant over the male chromosome in most cases.
B) mutations are more likely to occur in the Y chromosome than in the X chromosome.
C) the smaller Y chromosome does not contain enough genes to match each of the genes on the X chromosome so recessive genes on the X chromosome show up.
D) recessive genes that pair up with dominant genes on the X chromosome will be expressed in the male.