Plasmids are used as vectors because ........

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(C) Plasmids are small,circular,double-stranded $DNA$ molecules that are distinct from a cell's chromosomal $DNA$. They are widely used as vectors in

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They have the ability to replicate independently.

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(C) Plasmids are small,circular,double-stranded $DNA$ molecules that are distinct from a cell's chromosomal $DNA$. They are widely used as vectors in biotechnology because they possess an origin of replication $(ori)$,which allows them to replicate independently within the host cell. This property ensures that the recombinant $DNA$ inserted into the plasmid is copied many times as the host cell divides.

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