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