This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of protein and amino acid, Subject name: Biochemistry
[{'content': 'Which of these is a conservative mutator? \nSelect and explain. \nA. Glutamic acid-glutamine, B. Histidine glycine, C. Alanine-leucine, D. Arginine-aspaic acid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Conservative mutator, there is no change in function inspite of mutation.Alanine and Leucine are interconveable.Ref: Textbook of BIOCHEMISTRY for Medical Students, DM Vasudevan, Seventh edition, page no: 215', 'role': 'assistant'}]