This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'The term ‘sequence’ in genetics means: \nSelect and explain. \nA. Order of nucleotides within DNA, B. Order of aminoacids in tRNA, C. None, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Explanation:\nWhat is Sequence?\nA nucleic acid sequence is a succession of letters that indicate the order of nucleotides within a DNA\n(using GACT) or RNA (GACU) molecule.\nBy convention, sequences are usually presented from the 5' end to the 3' end. Because nucleic acids are normally linear (unbranched) polymers, specifying the sequence is equivalent to defining the covalent structure of the entire molecule.\nFor this reason, the nucleic acid sequence is also termed the primary structure.", 'role': 'assistant'}]