Magic bullets are the

Match the following columns:

List-$I$	List-$II$
$(a)$ $1977$	$(1)$ Creation of the first transgenic cow
$(b)$ $1983$	$(2)$ American company obtained patent for Basmati rice
$(c)$ $1990$	$(3)$ Eli Lilly company prepared two $DNA$ sequences for insulin
$(d)$ $1997$	$(4)$ First clinical gene therapy trial

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:

The vector used for delivery of $ADA$ $cDNA$ into cells of a patient receiving gene therapy is

Find the correct statements from the following:
$I.$ Gene therapy is a genetic engineering technique used to treat diseases at the molecular level.
$II.$ Calcitonin is a medically useful recombinant product in the treatment of infertility.
$III.$ Bt toxin is a biodegradable insecticide obtained from $Bacillus \text{ } thuringiensis$.

Maturation of proinsulin into insulin takes place after