The separated bands of $DNA$ are cut out from the agarose gel and extracted from the gel piece. This step is known as . . . . . . .

When was the first extra $DNA$ fragment successfully inoculated into $E. coli$ using a plasmid?

In which step of $PCR$ do the primers anneal to the $DNA$ template?

The components of a bioreactor are:
$I.$ An agitator system
$II.$ An oxygen delivery system
$III.$ Foam control system
$IV.$ Temperature control system
$V.$ $pH$ control system
$VI.$ Sampling ports to withdraw cultures periodically
Choose the correct option.

The Polymerase Chain Reaction $(PCR)$ is a reaction in which amplification of specific $DNA$ sequences is carried out in vitro. This statement is

What is required for the expression of a foreign gene?