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
[{'content': 'In an Autosomal Recessive (AR) disorder, one parent is normal and the other is carrier and the child is also affected. What is the reason - \nSelect and explain. \nA. Germ line mosaicism, B. Genomic imprinting, C. Genomic imprinting, D. Uniparental disomy', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Uniparental disomy", 'role': 'assistant'}]