Duchenne muscular dystrophy has a(n) _____ inheritance pattern.
A) autosomal recessive
B) X-linked recessive
C) Y-linked dominant
D) chromosomal

Question

Quizplus · Accepted Answer

Duchenne muscular dystrophy is caused by a mutation on the X chromosome, so it has an X-linked recessive inheritance pattern. This means that the gene is located on the X chromosome, and males only inherit one X chromosome from their mother, so if they receive a mutated X chromosome, they will develop the disease. Females have two X chromosomes, so they can inherit one mutated X chromosome and one normal X chromosome, and may be carriers of the disease without exhibiting symptoms.

Duchenne Muscular Dystrophy Has A(n) _____ Inheritance Pattern