The small circular DNA molecules found in bacteria, outside the main chromosome, are called
Amesosomes
Bnucleoids
Cpolysomes
Dplasmids
Answer & Solution
Correct answer: D. plasmids
Plasmids are extra-chromosomal circular DNA molecules in bacteria. They often carry antibiotic-resistance genes and are routinely used as vectors in genetic engineering. The nucleoid is the region where the main chromosome sits; polysomes are chains of ribosomes; mesosomes are membrane infoldings.
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