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: Physiology
[{'content': 'Which of the following techniques is used for detection of variations in DNA sequence and Gene expression \nSelect and explain. \nA. Hypothalamus, B. Thalamus, C. Putamen, D. Limbic coex.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Hypothalamus', 'role': 'assistant'}]