(3) "There is another transposable element of the same type present in the cell and it expresses a functional transposable enzyme." is the circumstance that this insertion sequence would be able to transpose.
Bacterial insertion sequence is a type of straightforward transposon. DNA segments known as transposons have the capacity to relocate throughout the genome. Only the genes necessary for their transposition are carried by insertion sequences.
The protein needed for the transposition of bacterial insertion sequences is called transposase. The binding sites for this protein are the brief repetitions found at both ends of the bacterial transposons.
Transposase's primary job is to make staggered incisions in the target DNA region where the insertion sequence will be put. The target DNA has a gap created by the transposase cut, which is where the bacterial transposons are placed.
It wouldn't be able to transpose if a deletion mutation eliminated the transposase gene from the insertion sequence.
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Question correction:
An insertion sequence contains a large deletion in its transposase gene. Under what circumstances would this insertion sequence be able to transpose?
