$PCR$ technique was invented by

Identify the desirable characteristics for a plasmid used in $rDNA$ technology from the following.
$A$. Ability to multiply and express outside the host in a bioreactor.
$B$. $A$ highly active promoter
$C$. $A$ site at which replication can be initiated
$D$. One or more identifiable marker genes
$E$. One or more unique restriction sites.

What type of biological molecules are cloning vectors?

The restriction enzyme $EcoRI$ cuts the $DNA$ strand between $G$ and $A$ bases only when the sequence is:

The $DNA$ used as a carrier for transferring a fragment of foreign $DNA$ into a suitable host is called

Select the correct pair: