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What is the usual shape of plasmid DNA?

Answer and explanation

Correct answer: Circular DNA

Plasmids are small extrachromosomal DNA molecules found in bacteria and are usually double-stranded circular DNA. Therefore, option B is correct. Linear DNA may occur in some organisms or special cases, but the usual plasmid form is circular. Exam tip: Remember plasmids as small, circular DNA molecules that can replicate independently.

Related tags

Plasmid DnaCloning VectorsCircular DnaExtrachromosomal DnaBiotechnologyPrinciples Of BiotechnologyClass 11 Mcq

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