Desired genes have been introduced into transgenic animals to obtain large-scale production of useful biological products encoded by these genes. This approach is generally referred to as

From which organism was insulin extracted in earlier times?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Genetically engineered Human Insulin	$I$. Gene therapy
$B$. $\text{GM}$ Cotton	$II$. $\text{E. coli}$
$C$. $\text{ADA}$ Deficiency	$III$. Antigen-antibody interaction
$D$. $\text{ELISA}$	$IV$. $\text{Bacillus thuringiensis}$

Choose the correct answer from the options given below:

Which of the following is used as a vector in gene therapy?

How many of the following statements are correct?
$(i)$ Mature insulin is made up of $A, B$ and $C$ peptides.
$(ii)$ Removal of $C$-peptide helps in the maturation of insulin.
$(iii)$ In mature insulin,$C$-peptide is present.
$(iv)$ In insulin,chains $A$ and $B$ are linked by disulphide bonds.

How many of the following statements are incorrect?
$I.$ Genes of Agrobacterium are used to produce humulin.
$II.$ Indian government has set up $\text{GEAC}$.
$III.$ $\alpha-1$-antitrypsin is used to treat $\text{PKU}$.
$IV.$ $\text{ELISA}$ serves the purpose of early diagnosis.
$V.$ Flavr-savr is a variety of pomato.