Mention the main phases included in recombinant $DNA$ technology.

(N/A) The main phases included in recombinant $DNA$ technology are as follows:
$(i)$ Identification and isolation of $DNA$ with desirable genes.
$(ii)$ Insertion of the isolated $DNA$ into a suitable vector to form recombinant $DNA$.
$(iii)$ Introduction of recombinant $DNA$ into the host cell.
$(iv)$ Selection of transformed host cells and maintenance of recombinant $DNA$ in the host.
$(v)$ Expression of the foreign gene to obtain the desired product.