Due to Its Cause,girls are More Likely to Have Duchenne

Question

Due to its cause,girls are more likely to have Duchenne muscular dystrophy than are boys.

Accepted Answer

Duchenne muscular dystrophy is an X-linked recessive disorder that is caused by a mutation in the DMD gene located on the X chromosome. As girls have two X chromosomes, they would need to inherit two copies of the mutated gene to develop the disorder, whereas boys only need to inherit one copy from their mother. Therefore, boys are more likely to have Duchenne muscular dystrophy than girls.