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': 'All are examples of point mutation, except \nSelect and explain. \nA. Silent mutation, B. Frame-shift mutation, C. Missense mutation, D. Nonsense mutation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A frameshift mutation is a genetic mutation caused by a deletion or inseion in a DNA sequence that shifts the way the sequence is read. A DNA sequence is a chain of many smaller molecules called nucleotides Ref-Harpers illustrated biochemistry 30/e p658', 'role': 'assistant'}]