Give scientific reasons: The replication of $DNA$ is bidirectional.

(N/A) The replication of $DNA$ begins at a specific site known as the origin of replication $(ori)$.
From this point,the replication process proceeds in both directions simultaneously.
This process is facilitated by enzymes such as $DNA$ helicase,which unwinds the helix,and $DNA$ gyrase,which relieves the torsional strain.
As the two strands separate,they form a $Y$-shaped structure known as the replication fork.
Since the replication process moves in two opposite directions from the origin,it is termed as bidirectional replication.