Final answer:
Muscular dystrophy is a genetic disorder that causes progressive muscle weakness and muscle tissue degeneration. It is characterized by the absence of neural involvement and is caused by defective proteins in muscle cells.
Step-by-step explanation:
Muscular dystrophy is a group of disorders characterized by the progressive atrophy of skeletal muscle without neural involvement. It is caused by defective proteins in muscle cells, leading to muscle weakness and death of muscle tissues. One example of muscular dystrophy is Duchenne muscular dystrophy (DMD), which is caused by a lack of the protein dystrophin. Without sufficient dystrophin, muscle contractions cause damage to muscle fibers over time.