This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of Muscle and Muscular Dystrophies, Subject name: Pediatrics
[{'content': "Duchenne's muscular dvstrophy- \nSelect and explain. \nA. X-L inked dominant, B. X-Linked recessive, C. Autosomal dominant, D. Autosomal recessive", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., X-linked recessive o Duchenne and Becker's muscular dystrophy are X-like recessive,o So expression of gene is essentially confirmed in males.o Females are affected only if X-chromosome carrying the normal allele is lost or inactivated.", 'role': 'assistant'}]