Red-Green Color Blindness Is Inherited as a Sex-Linked Recessive Trait

Multiple Choice

Red-green color blindness is inherited as a sex-linked recessive trait.The gene is found on the X chromosome.How can a man with normal color vision father a daughter who is red-green color-blind?

A) The woman with whom he mates is red-green color-blind.
B) The man is heterozygous for red-green color blindness.
C) He can't (unless there is a mutation) .
D) The man's mother carries an allele for red-green color blindness, and the expression of the trait skipped a generation.