Goeddel and his associates biosynthesized the $HGH$ by genetic engineering by:

Genetically engineered bacteria are being used in commercial production of

Some of the steps involved in the production of humulin are given below. Choose the correct sequence.
$(i)$ Synthesis of gene $(DNA)$ for human insulin artificially.
(ii) Culturing recombinant $E. coli$ in bioreactors.
(iii) Purification of humulin.
(iv) Insertion of human insulin gene into plasmid.
$(v)$ Introduction of recombinant plasmid into $E. coli$.
(vi) Extraction of recombinant gene product from $E. coli$.

$ELISA$ is based on the principle of

Which one of the following genes is defective in patients suffering from Severe Combined Immunodeficiency Disease $(SCID)$?

Injecting functional adenosine deaminase into a patient's (lacking $ADA$ gene) blood cells may be considered as