The human insulin produced by genetic engineering is called $......$.

What is produced by genetically engineered bacteria?

Gene therapy in humans was first practiced by Blease and Andresco to cure

Which of the following is a main challenge for the production of insulin by the $r-DNA$ techniques?

With regard to insulin,choose the correct options.
$(a)$ $C$-peptide is not present in mature insulin.
$(b)$ The insulin produced by $rDNA$ technology has $C$-peptide.
$(c)$ The pro-insulin has $C$-peptide.
$(d)$ $A$-peptide and $B$-peptide of insulin are interconnected by disulphide bridges.
Choose the correct answer from the options given below.

Adenosine deaminase $(ADA)$ deficiency is most commonly caused by which genetic abnormality?