It is now possible to breed plants and animals with desired characters through

Which is responsible for controlling the copy number of linked $DNA$ in a plasmid?

Which technology involves altering the chemistry of genetic material ($DNA$ and $RNA$) to introduce it into host organisms and thus change the phenotype of the host organism?

The technique of altering the chemistry of genetic material ($DNA$ and $RNA$) to introduce it into host organisms and thus change the phenotype of the host organism is known as:

Mention the features that are required to facilitate cloning into a vector.

Discuss with your teacher what does 'a suitable gene' mean in the context of $DNA$ vaccines.