X-Linked Reces. MD
Duchenne dystrophy is inherited as an x-linked recessive trait, carried in women.
It affects about 1in 3500 male births with no geographic/ethnic variation. About 1/3 of the cases are caused by new mutations, the others are familial. Diagnosis is usually evident from clinical features. The abnormality is in the cytoskeletal protein
dystrophin. It is unclear why the lack of dystrophin ->findings.