<prompt> Which of the following is false about Duchenne muscular dystrophy?Duchenne muscular dystrophy is less severe than Beckers dystrophyX-linked recessiveDilated cardiomyopathy is seenIntellectual impairement is common  <response>: Duchenne muscular dystrophy is more severe than Becker;s dystrophy. Becker;s dystrophy is similar to Duchenne muscular dystrophy with a genetic defect at the same locus Xp21 but clinically less severe. Impoant differences between Duchenne and Becker;s muscular dystrophy: Duchenne;s dystrophy Becker;s dystrophy Onset Age: 2-3 years Age: 5-15 years Weakness Progressive Variable Intellectual impairement Common Uncommon Prognosis Wheel chair dependent bby adolescence Ambulatory till early adult life Death By the age of 18-20 years By the age of 40-50 years Ref: Nelson textbook of pediatrics 21st edition Pgno: 3281 