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': 'What is lethal - \nSelect and explain. \nA. OX, B. XX, C. OY, D. XXX', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e.,OYSingle Y chromosome is not compatible with life.XX is normal female genotypeX0 is Turner syndrome genotypeXXX is Triple X syndrome genotype", 'role': 'assistant'}]