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': 'Effect of environment on genes is called – \nSelect and explain. \nA. Positive Eugenics, B. Negative Eugenics, C. Euthenics, D. Enthenics', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Eugenics \n\nScience which aims to improve the genetic endowment of human population.\nThat is improving the quality of the human species or a human population by genetic manipulation.\nEugenic may be :\n\n\nNegative →\xa0\xa0\xa0\xa0\xa0\xa0\xa0 Discouraging reproduction by persons having genetic defect or presumed to have inheritable undesirable traits this includes abortions, sterilization & other methods family planning.\nPositive Eugenics → Encouraging reproduction presumed to have inheritable desirable trait. For example, in vitro-fertilization, cloning, egg transplantation etc.\n\nEuthenics \n\nEuthenics deal with human improvement through altering the external environment (environmental manipulation).\nIt includes education, prevention and removal of contagious disease and parasites, education regarding home economics, sanitation and housing.', 'role': 'assistant'}]