Question

What are plasmids?
Extra-chromosomal DNA which can self replicate
Integrated within host DNA without replication ability
DNA carrying genetic sequence, without expressing it
None of these​

Answer 1

Answer:

A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently. They are most commonly found as small circular, double-stranded DNA molecules in bacteria; however, plasmids are sometimes present in archaea and eukaryotic organisms.

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