In molecular genetics, what type of mutation occurs when a single nucleotide insertion shifts the entire triplet reading frame of an mRNA sequence?
Answer and explanation
Correct answer: C. Frameshift mutation
- Step 1: Inserting or deleting a number of nucleotides not divisible by three shifts the reading frame, altering all downstream codons. Answer: Frameshift mutation. Why not the others: Silent mutations change a base without altering the coded amino acid.
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