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': 'DNA or RNA fragment which is radioactive or chemically labile to detect a specific fragment? \nSelect and explain. \nA. Probe, B. Okazaki fragment, C. Antibody, D. Epitope', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Probes are generally pieces of DNA or RNA labeled with a 32P-containing nucleotide--or fluorescently labeled nucleotides The probe must recognize a complementary sequence to be effective.Ref: Harper 27e, page no: 456', 'role': 'assistant'}]