what holds dna open during replication
Focusing on the schematic illustration in a, two DNA polymerase molecules are active at the fork at any one time. One moves continuously to produce the new daughter DNA molecule on the leading strand, whereas the other produces a long series of short Okazaki DNA fragments on the lagging strand.oth polymerases are anchored to their template by polymerase accessory proteins, in the form of a sliding clamp and a clamp loader. A DNA helicase, powered by ATP hydrolysis, propels itself rapidly along one of the template DNA strands (here the lagging strand), forcing open the DNA helix ahead of the replication fork.