Which of the following enzymes hydrolyzes the internal phosphodiester bonds in a polynucleotide chain?

Describe the role of Agrobacterium tumefaciens in transforming a plant cell.

Restriction enzymes that are used in the construction of recombinant $DNA$ are endonucleases which cut the $DNA$ at 'specific-recognition sequence'. What would be the disadvantage if they do not cut the $DNA$ at specific-recognition sequence?

The thermostable enzymes $Taq$ and $Pfu$ are isolated from thermophilic bacteria,which are used as:

Biolistics method is suitable for gene transfer into . . . . . .

Sticky ends are helpful in the action of which enzyme?