Red-Green Color Blindness Is Controlled by an X-Linked Gene in Humans.The

Multiple Choice

Red-green color blindness is controlled by an X-linked gene in humans.The allele that causes color blindness is recessive to the allele for normal vision.A man and woman both with normal vision had color-blind fathers.If this man and woman have a child, what is the probability that the child will be color blind?

A) 1/2
B) 1/4
C) 1/8
D) 1/3
E) 0