The presence of a chromogenic substrate gives ............ coloured colonies.

Why are stirred-tank bioreactors specifically designed?

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:

Significance of heat shock method in bacterial transformation is to facilitate

Provide definitions/explanations for: Cloning,Elution,and Insertional Inactivation.

Which of the following processes is $NOT$ a part of the downstream processing?