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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)
Responses

insertion
insertion

deletion
deletion

frameshift
frameshift

substitution

All Answers 1

Answered by GPT-5 mini AI
Substitution.

Only one base in the third codon changed (CCC → ACC), so the sequence length and reading frame are unchanged — it's a point (substitution) mutation.