What is a plasmid?

Options

A. bacterial, Tlinear, dsDNA
B. extrachromnosomal linear RNA
C. extrachromosomal circular dsDNA
D. autonomously replicating circular RNA.

Answer

C

Explanation

Plasmid is a structure in bacterial cells consisting of DNA that can exist and replicate. independently of the chromosome. These are extrachromosomal circular dsDNA which provide genetic instructions for certain cell activities (e.g. resistance to antibiatic drugs). They can be transferred from cell to cell in a bacterial colony. Plasmids are widely used as vectors to produce recombinant DNA for gene cloning.