Correct option is b) A DNA polymerase that is a main polymerizing enzyme.
DNA polymerase have specific role in the replication of DNA process. In E.coli which replicates the genome from a single replication fork, the polymerase DNA POL III enzyme primarly responsible for DNA replication and then form replication complex with high processivity.
The polymerase is physically linked to clamp through a clamp interacting sequence motif. This interaction serves to increase the processivity of DNA polymerase. Because the when its high then synthesis DNA very quickly. This is due to part of the beta -clamp that hold on DNA stands.
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