Pseudohypertrophic muscular dystrophy is a human disorder that causes gradual deterioration of the muscles.Only boys are affected,and they are always born to phenotypically normal parents.Due to the severity of the disease,the boys die in their teens.What can we deduce about the disorder?

Question

Quizplus · Accepted Answer

The fact that only boys are affected suggests that the allele for this disorder is located on the X chromosome. Since the disorder only affects boys, it must be recessive. The fact that the parents are phenotypically normal also supports the idea that the allele is recessive.

Pseudohypertrophic Muscular Dystrophy Is a Human Disorder That Causes Gradual