This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Duchnne's muscular dystrophy - 
Select and explain. 
A. X-linked dominant, B. X - linked recessive, C. Autosomal dominant, D. Autosomal recessive
B: X - linked recessive
Answer: B: X - linked recessive 
Explanation: Ans. is 'b' i.e., X-linked recessive o Duchnne & Becker's muscular dystrophy are X-linked recessive.