Which of the following is the first restriction endonuclease discovered?

The $rop$ gene,which codes for the proteins involved in the replication of the plasmid $pBR322$ in $E. coli$,is located at the restriction site of:

Which enzyme is used to join foreign $DNA$ to a plasmid?

What is a palindromic sequence?

$A$ set of bacterial clones,each containing a plasmid or phage,is called

Which of the following enzyme$(s)$ are $\text{NOT}$ essential for gene cloning?
$A.$ Restriction enzymes
$B.$ $\text{DNA}$ ligase
$C.$ $\text{DNA}$ mutase
$D.$ $\text{DNA}$ recombinase
$E.$ $\text{DNA}$ polymerase
Choose the correct answer from the options given below: