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
Oncogenes can be best studied by- 
Select and explain. 
A. Transfection, B. Transduction, C. Transformation, D. Conjugation
A: Transfection
Answer: A: Transfection 
Explanation: Ans. is 'a' i.e., Transfection "A useful method for the study of oncogenes is transfection * -- Ananthanarayan