Question

examine the two strands of dna below. which kind of mutation occurred?
original strand: agc gta ccc tac
new strand: agc gta acc tac
(1 point)
○ substitution
○ deletion
○ frameshift
○ insertion

Explanation:

To determine the mutation, we compare the original and new DNA strands. The original has "CCC" and the new has "ACC" – one base (C to A) is replaced. Substitution is when one base is replaced by another. Deletion removes a base, frameshift is a shift in the reading frame (from insertion/deletion of non - multiple - of - three bases), and insertion adds a base. Here, it's a single base replacement, so it's substitution.

Answer:

A. substitution