The total cost of a business is comprised of fixed costs and variable costs. Fixed costs and variable costs affect the marginal cost of production only if variable costs exist. The marginal cost of production is calculated by dividing the change in the total cost by a one-unit change in the production output level.
Medical Definition of MUSCULAR DYSTROPHY. : any of a group of hereditary diseases characterized by progressive wasting of musclesâcalled also progressive muscular dystrophy; see becker muscular dystrophy, duchenne muscular dystrophy.ull Definition of MUSCULAR DYSTROPHY. : any of a group of hereditary diseases characterized by progressive wasting of muscles â compare Becker muscular dystrophy, Duchenne muscular dystrophy. See muscular dystrophy defined for English-language learners.
Muscular dystrophy (MD) is a group of muscle diseases that weaken the musculoskeletal system and hamper locomotion. Muscular dystrophies are characterized by progressive skeletal muscle weakness, defects in muscle proteins, and the death of muscle cells and tissue.ecker muscular dystrophy (BMD) is a less severe variant of Duchenne muscular dystrophy and is caused by the production of a truncated, but partially functional form of dystrophin. Survival is usually into old age.