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': 'What is the number of Barr bodies seen in cells of person with Klinefelter syndrome? \nSelect and explain. \nA. 0, B. 1, C. 2, D. 3', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Number of Barr\xa0bodies = (N - 1)\nN is the number of x chromosomes.\nKlinefelter syndrome - 47 XXY\nBarr bodies = (2 - 1) = 1', 'role': 'assistant'}]