This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Regulation of Gene Expression , Subject name: Biochemistry
[{'content': 'Oncogenes can be best studied by- \nSelect and explain. \nA. Transfection, B. Transduction, C. Transformation, D. Conjugation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Transfection "A useful method for the study of oncogenes is transfection * -- Ananthanarayan', 'role': 'assistant'}]