The International Centre for Genetic Engineering and Biotechnology $(ICGEB)$ established by the United Nations Organization $(UNO)$ is located at

First biochemical to be produced commercially by microbial cloning and genetic engineering is:

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.

In $1983$, Eli Lilly, an American company, prepared two $DNA$ sequences corresponding to $A$ and $B$ chains of human insulin and introduced them in plasmids of which organism to produce insulin chains?

In transgenics,the expression of transgene in the target tissue is known by:

Repeated transfusions of genetically modified cells are required in $SCID$ patients and in enzyme replacement therapy because