This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Schizophrenia and other psychotic disorders, Subject name: Psychiatry
[{'content': 'Prevalence of schizophrenia in dizygotic twins of schizophrenic patient is \nSelect and explain. \nA. 40%, B. 1%, C. 12%, D. 0.10%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Usual prevalence in general population is 0.5 to 1% and 40% in child with both parents being schizophrenic. Among dizygotic twins, it is 12% if a parent is schizophrenic Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 386', 'role': 'assistant'}]