Duchenne's muscular dystrophy is inherited as a(n):
A) Autosomal dominant trait
B) Autosomal recessive trait
C) Sex-linked recessive trait
D) Sex-linked dominant trait
E) Polygenic trait

Question

Quizplus · Accepted Answer

Duchenne's muscular dystrophy is caused by a mutation on the X chromosome, making it a sex-linked recessive trait. It primarily affects boys because they have only one X chromosome and do not have a second X chromosome to provide a backup copy of the gene. Girls can inherit the disorder if they receive the mutated gene from both parents.

Duchenne's Muscular Dystrophy Is Inherited as A(n)