Which of the following represents an advantage of growing cells in continuous culture as compared to a shake flask?

Transformation is a process in which ..........

Which of the following steps is/are catalysed by $Taq$ polymerase in a $PCR$?

Match the columns:

Column-$I$	Column-$II$
$(a)$ Lysozyme	$(i)$ Fat
$(b)$ Cellulase	$(ii)$ Protein
$(c)$ Chitinase	$(iii)$ Bacteria
$(d)$ Lipase	$(iv)$ Fungi (Penicillium)
	$(v)$ Plant (Mangifera indica)

Given below are two statements.
Statement $I$ - The isolated $DNA$ of donor organism is cleaved by suitable restriction endonuclease to form $DNA$ fragments with cohesive staggered or blunt ends.
Statement $II$ - The foreign $DNA$ or passenger $DNA$ can also be obtained directly from genomic or cDNA library.
In the light of above statements,select the correct option given below:

When foreign $\text{DNA}$ is inserted into any vector,it results in inactivation of any marker gene. This is used for selection of $......\ :-$