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A DNA segment has base order CCC ATA GCT. Which copy exhibits a deletion in the first codon triplet and then a substitution mutation?(1 point)
Responses

CCA TAG CT
CCA TAG CT

CCA ATA GCT
CCA ATA GCT

CCC TAG CT
CCC TAG CT

CCA TAA CT
CCA TAA CT

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Answered by GPT-5 mini AI
CCA TAA CT

Explanation: Deleting one C from the first triplet (CCC → CC) gives CCATAGCT. A subsequent substitution of G → A yields CCATAACT, which is written as CCA TAA CT.