This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Methods of introducing gene in target cells are all except \nSelect and explain. \nA. Electroporation, B. Transfection, C. Site directed recombination, D. FISH', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Fluorescence in situ hybridization(FISH) is a cytogenetic technique that uses fluorescent probes that bind to only those pas of the chromosome with a high degree of sequence complementarity.', 'role': 'assistant'}]