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: Pathology
[{'content': 'The chromosomal karyotype in Patau syndrome is - \nSelect and explain. \nA. 47)0C,+21, B. 46XX/47)0C+18, C. 45XX,der(14;21), D. 47XX,+13', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 47XX +13", 'role': 'assistant'}]