Molecular scissors are

In recombinant $DNA$ technique,the term vector refers to a

Which enzyme is required for the process shown in the figure below?

In the following palindromic base sequences of $DNA$,which one can be cut easily by a particular restriction enzyme?

Two enzymes responsible for restricting the growth of bacteriophages in $E. coli$ were isolated. One was methylase and the other was restriction endonuclease. What is the significance of methylase?

The gene of interest was cloned at the $Sal I$ site in $pBR322$. The recombinant plasmid will exhibit susceptibility to: