Before starting DNA replication, we have to understand what is DNA replication?

What is DNA replication? - it is the biological process in which cells create two identical copies of DNA from the original DNA molecule with high accuracy (fidelity rate).

DNA replication is a semiconservative process, which means each strand of DNA molecule acts as a template for the synthesis of a new, complementary strand.

This process takes one starting DNA molecule to two “daughter” molecules, with each new DNA double helix containing one new and one old strand (parent strand).