Genetic engineering is connected with

$ELISA$ is based on:

Gene therapy is:

What are recombinant $DNA$ vaccines? Give two examples of such vaccines. Discuss their advantages.

Mature insulin does not contain ........

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 $Bacillus \text{ } thuringiensis$.