Modern biotechnology originated from which techniques?

What is the origin of replication $(ori)$?

Modified $Streptococcus$ bacteria are produced with the help of which technology?

Who among the following scientists is associated with the discoveries in genetic engineering?

What is the fate of a piece of $DNA$ carrying only the gene of interest which is transferred into an alien organism?
$A$. The piece of $DNA$ would be able to multiply itself independently in the progeny cells of the organism.
$B$. It may get integrated into the genome of the recipient.
$C$. It may multiply and be inherited along with the host $DNA$.
$D$. The alien piece of $DNA$ is not an integral part of the chromosome.
$E$. It shows the ability to replicate.
Choose the correct answer from the options given below:

Ori is a $DNA$ sequence that is responsible for initiating replication. This statement is