Identify the given figure.

What is the significance of adding proteases at the time of isolation of genetic material $(DNA)$?

Which of the following is $NOT$ included in the downstream processing of recombinant $DNA$ technology?

Bacterial colonies that have a foreign $\text{DNA}$ fragment inserted into the plasmid will appear white,because $-$

Assertion : Insertion of recombinant $DNA$ within the coding sequence of $\beta -$ galactosidase results in colourless colonies.
Reason : Presence of insert results in inactivation of enzyme $\beta -$ galactosidase known as insertional inactivation.

In which method is recombinant $DNA$ directly injected into the nucleus of an animal cell?