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

The vaccine for Hepatitis-$B$ is produced from ...... by ...... .

Which of the following statements is not correct?

Consider the following statements about therapeutic drugs:
$I$. The recombinant $DNA$ technology is used for the production of therapeutic drugs which are safe and effective.
$II$. It avoids unwanted immunological responses,commonly observed with similar products isolated from non-human sources.
$III$. About $30$ recombinant therapeutics have been approved for human use in the world,including India.
Which of the statements given above are correct?

When a gene is targeted to correct a disease by amplifying the gene,what is this process called?

$ADA$ deficiency can be cured by