Which of the following is used for the treatment of genetic disorders?

The disadvantage of using porcine insulin in diabetic patients is

Which disease vaccine can be developed using recombinant $DNA$ technology?

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 which therapeutic method is the functional $ADA-cDNA$ introduced into the patient's lymphocytes?

What does the conventional method of diagnosis include?