Production of a human protein in bacteria by genetic engineering is possible because

Which of the following methods is not commonly used for introducing foreign $DNA$ into the plant cell?

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

The cutting of $DNA$ by restriction endonucleases results in the fragments of $DNA$. These fragments can be separated by a technique known as ......

Which of the following statements are correct with respect to $DNA$ separation, isolation and visualization?
$A$. The cutting of $DNA$ is done by molecular scissors.
$B$. The $DNA$ fragments separate according to their size in an agarose gel, upon electrophoresis.
$C$. The separated $DNA$ fragments can be seen without staining when exposed to $UV$ light.
$D$. The separated $DNA$ fragments, when stained with ethidium bromide, can be seen in visible light.
Choose the correct answer from the options given below:

Explain the method for the separation and isolation of $DNA$ fragments.