A DNA segment has base order AGC TTA TCG. Which copy exhibits a frameshift mutation through deletion?(1 point)
1 AGC TTT CG
2 TTA TCG
3 AGC TTA TAG
4 AGC TCG
1 answer
The correct answer is 3. AGC TTA TAG. This is because a frameshift mutation occurs when a base is either inserted or deleted, causing a shift in the reading frame of the genetic code. In this case, the deletion of the base "CG" in option 3 causes a shift in the reading frame after the deletion, resulting in a different sequence of codons and ultimately a different protein product.