LIFE SCIENCE

Detailed explanation-1: -On the leading strand, DNA synthesis occurs continuously. On the lagging strand, DNA synthesis restarts many times as the helix unwinds, resulting in many short fragments called “Okazaki fragments.” DNA ligase joins the Okazaki fragments together into a single DNA molecule.

Detailed explanation-2: -The leading strand, the strand that runs 5’ to 3’, is replicated continuously. This is because it is known that the DNA polymerase is only able to synthesize in the 5’ to 3’ direction so the leading strand is in the correct orientation for the DNA polymerase so it can be replicated continuously.