AP BIOLOGY

Detailed explanation-1: -The first one is called the leading strand. This is the parent strand of DNA which runs in the 3’ to 5’ direction toward the fork, and it’s replicated continuously by DNA polymerase because DNA polymerase builds a strand that runs antiparallel to it in the 5’ to 3’ direction.

Detailed explanation-2: -Leading and lagging strands One new strand, the leading strand, runs 5’ to 3’ towards the fork and is made continuously. The other, the lagging strand, runs 5’ to 3’ away from the fork and is made in small pieces called Okazaki fragments.

Detailed explanation-3: -The strand that opens in the 3’ to 5’ direction towards the replication fork is referred to as the lagging strand. The strand that runs in the 5’ to 3’ direction in the replication fork is referred to as the leading strand. The strand is replicated discontinuously.

Detailed explanation-4: -DNA is always synthesized in the 5’-to-3’ direction, meaning that nucleotides are added only to the 3’ end of the growing strand.

Detailed explanation-5: -This strand is made continuously, because the DNA polymerase is moving in the same direction as the replication fork. This continuously synthesized strand is called the leading strand.