(Solution) - A researcher sequenced a portion of a bacterial gene and -(2025 Original AI-Free Solution)

Paper Details

A researcher sequenced a portion of a bacterial gene and obtained the following sequence, beginning with the start codon, which is underlined:

The bacterial strain that contained this gene has been maintained in the laboratory and grown serially for many generations. Recently, another person working in the laboratory isolated DNA from the bacterial strain and sequenced the same region. The following results were obtained:
Explain why these sequencing differences may have occurred.