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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 substitution substitution deletion deletion frameshift frameshift Skip to navigation

1 answer

To examine the two strands of DNA you provided:

Original strand: AGC GTA CCC TAC
New strand: AGC GTA ACC TAC

Let's compare the two strands:

  • The first two segments (AGC GTA) are identical in both strands.
  • The third segment changes from CCC in the original strand to ACC in the new strand.
  • The fourth segment (TAC) is also identical in both strands.

The change from CCC to ACC indicates that one base pair has been replaced with another base pair. This type of mutation is known as a substitution mutation, as one nucleotide has been substituted for another.

Therefore, the correct response is: substitution.