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: Social & Preventive Medicine
[{'content': 'Hardly–weinberg law is related to – \nSelect and explain. \nA. Population genetics, B. Health economics, C. Social medicine, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hardly-Weinberg law \n\nThe hardly-Weinberg law states that "The relative frequencies of each gene allele tends to remain constant from generation to generation".\nThus, the study of gene frequencies, and the influences which operate to alter the "gene pool" and their long term consequences is the central theme in population genetics.', 'role': 'assistant'}]