Select the appropriate option for agarose.

What is required for the functioning of a cloning vector $DNA$?

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?

$A$: Restriction enzymes belong to a larger class of enzymes called nucleases.
$R$: Each restriction enzyme recognizes a specific palindromic nucleotide sequence in the $DNA$.

Which of the following palindromic base sequences can be easily cut in the middle by some restriction enzymes?

The most thoroughly studied of the known bacteria-plant interaction is the: