a DNA segment has bass order CCC ATA GCT which copy exhibits a deletion in the first codon triplet and then a substitution mutation

1 answer

If a DNA segment has the base order CCC ATA GCT and it undergoes a deletion in the first codon triplet, one base is removed, resulting in a new sequence: ATA GCT.

Following this deletion, a substitution mutation occurs, where one base is replaced with another. Let's assume that the base "T" is replaced with "G." The new sequence after the substitution mutation would be AGA GCT.

Therefore, the final DNA sequence with a deletion in the first codon triplet and a substitution mutation would be AGA GCT.