Cleft chin is an X-linked dominant trait.Assume that a man with a cleft chin marries a woman with a round chin.What percent of their male progeny will show the cleft chin trait?
A) 0 percent
B) 25 percent
C) 50 percent
D) 75 percent
E) 100 percent

Question

Quizplus · Accepted Answer

Since cleft chin is an X-linked dominant trait, and the father passes his X chromosome to all his daughters and his Y chromosome to all his sons, none of the male progeny will inherit the X chromosome with the cleft chin trait from their father. Therefore, 0 percent of the male progeny will show the cleft chin trait.

Cleft Chin Is an X-Linked Dominant Trait