Question

Which one of the following correctly represents the manner of replication of DNA?

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

Replication
Replication is the process by which a double stranded DNA molecule forms the identical daughter DNA molecules.
Lagging strand
The lagging strand is a single DNA strand which is running in the $3^{\prime }\to 5$’ direction. It is replicated in the $5^{\prime }\to 3$' direction away from the replication fork using Okazaki fragments. In this strand the discontinuous DNA synthesis occurs.
Leading strand
The leading strand is a single DNA strand which is running in the $5^{\prime }\to 3$’ direction. It is replicated in the $5^{\prime }\to 3$' direction, the same direction as the replication fork during DNA replication. In this strand the continuous synthesis of DNA occurs.
Final answer
(D)