Can muscular dystrophy be traced to a specific defect?

Muscular dystrophies: are a group of inherited neuromuscular disorders. Of the 9 major types & > 100 related disorders, each is caused by a specific mutant gene or genes. Some are inherited in an X-linked recessive pattern from a carrier mother; others are autosomal dominant, meaning each child of an affected parent has a 50% chance of inheriting it. Please specify the type to learn the specific genetic defect.