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What are plasmids ? Describe their role ...

What are plasmids ? Describe their role in bacteria?

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Plasmid is a round double DNA chain. It replicates by itself. It is seen in cytoplasm of bacterial cell. It mainly remains separate from the chromosome.
Plasmid is a external nuclear chromosome. It is useful for information from one cell to another. It functions as antibiotic resistant and in bacterial formation.
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