What Is Life? 2nd Edition by Jay Phelan

Exercise 39

A rare, X-linked dominant condition in humans, congenital generalized hypertrichosis, is marked by excessive hair growth all over a person's body. Which of the following statements about this condition is incorrect?
A) The son of a woman with this disease has just slightly more than a 50% chance of having this condition.
B) The daughter of a man with this condition has a 100% chance of having this condition.
C) The daughter of a woman with this disease has just slightly more than a 50% chance of having this condition.
D) The son of a woman with this disorder has a 100% chance of having this condition.
E) Males with this condition almost always have a more severe phenotype, because women usually have at least one normal allele that dilutes the effect of the mutated allele.