A Phenotypically Normal Woman Marries a Man with CMT Disease,a

Multiple Choice

A phenotypically normal woman marries a man with CMT disease,a autosomal dominant disorder.They have a son who has CMT disease.What were the chances he would get the disease? (Draw a Punnett square to help you determine the answer.)

A) 1:4 chance
B) 2:4 chance
C) 3:4 chance
D) 4:4 chance
E) less than 1:4 chance