The Phenotypic Effects of Duchenne Muscle Dystrophy Vary Considerably

Multiple Choice

The phenotypic effects of Duchenne muscle dystrophy vary considerably.This variation is explained largely by

A) how much of the dystrophin gene is deleted.
B) how much of the dystrophin gene is duplicated.
C) which chromosome the dystrophin gene is translocated to.
D) which point mutation is involved.
E) how many trinucleotide repeats are in the mutated gene.