Traits Controlled by Sex-Linked Recessive Genes Are Expressed More Often

Multiple Choice

Traits controlled by sex-linked recessive genes are expressed more often in males because:

A) males inherit these genes from their fathers.
B) males always carry two copies of these genes.
C) all male offspring of a female carrier get the gene.
D) the male has only one gene for the trait.
E) males get more doses of the recessive gene than do females.