Upon exposure to $UV$ radiation,$DNA$ stained with ethidium bromide will show:

Identify the correct sequence of steps in the Polymerase Chain Reaction $(PCR)$.

Which of the following methods are collectively referred to as downstream processing?

Select the incorrect statement regarding the continuous culture system.

After the biosynthetic phase, the product is separated & purified by the process called :-

The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate.
Given below are two statements about this method :
Statement-$I$ : The blue coloured colonies have $\text{DNA}$ insert in the plasmid and they are identified as recombinant colonies.
Statement-$II$ : The colonies without blue colour have $\text{DNA}$ insert in the plasmid and are identified as recombinant colonies.
In the light of the above statements,choose the most appropriate answer from the options given below: