In the broad host-range plasmid Psc101, close to the origin, there is a gene repA. What is the importance of this gene?

In the broad host-range plasmid Psc101, close to the origin, there is a gene repA. What is the importance of this gene? Correct Answer In replication

repA encodes the only plasmid-encoded protein, required for replication. It binds to the iterons and initiates DNA synthesis.

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The par region from a plasmid such as Psc101 can be cloned into Pbr322. What is the function of this region?
Once a plasmid has incorporated specific genes, such as the gene coding for the antibiotic ampicillin, into its genome, the plasmid may be cloned by