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': 'Karyotyping is done in which phase of cell cycle \nSelect and explain. \nA. Anaphase, B. Metaphase, C. Telophase, D. S phase', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Metaphase o To produce a karyotype, one must obtain cells capable of growth and division as karyotyping is done by arresting mitosis in dividing cells in metaphase", 'role': 'assistant'}]