Final answer:
Duchenne muscular dystrophy (DMD) is a genetic disorder linked to the muscular system that causes progressive weakening of the skeletal muscles.
Step-by-step explanation:
Duchenne muscular dystrophy (DMD) is a genetic disorder linked to muscular system. It is characterized by progressive weakening of the skeletal muscles and is caused by a lack of the protein dystrophin, which helps the thin filaments of myofibrils bind to the sarcolemma.
Without sufficient dystrophin, muscle contractions cause the sarcolemma to tear, leading to cellular damage and muscle fiber degradation.