This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Following are required for normal growth \nSelect and explain. \nA. Proto oncogene, B. Tumor suppressor genes, C. Oncogenes, D. DNA repair genes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A,B,D are answers Ref Robbins 7/e p290; 9/e p280 A proto-oncogene is a normal gene that could become an oncogene due to mutations or increased expression. Proto-oncogenes code for proteins that help to regulate the cell growth and differentiation. Proto-oncogenes are often involved in signal transduction and execution of mitogenic signals, usually through their protein products. Examples of proto-oncogenes include RAS, WNT, MYC, ERK, and TRK.', 'role': 'assistant'}]