The par region from a plasmid such as Psc101 can be cloned into Pbr322. What is the function of this region?

The par region from a plasmid such as Psc101 can be cloned into Pbr322. What is the function of this region? Correct Answer Maintains stability

Partitioning function, par regions are essential for low copy number plasmids. The higher copy number plasmids also contain a par region but this is deleted in many cloning vectors.
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