This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Concept of health and disease, Subject name: Social & Preventive Medicine
[{'content': 'Founder effect describes the distribution of diseases on the basis of \nSelect and explain. \nA. Occupation, B. Environment, C. Genetics, D. None', 'role': 'user'}, {'content': "Answer: C \nExplanation: In population genetics, the founder effect is the loss of genetic variation, and/or occurrence of genetic disorders when a new population is established by a very small number of individuals from a larger population. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 888", 'role': 'assistant'}]