NCERT Biology Class 12, Chapter 9

In gene engineering, the most commonly used plasmid DNA comes from? NEET Biology MCQ

Last updated: July 30, 2026

Reviewed by MedQGo Editorial Team | Last updated: July 30, 2026

In gene engineering, the most commonly used plasmid DNA comes from

Aan extrachromosomal genetic element of bacteria

Ba part of bacterial chromosome DNA

Ca part of eukaryotic cell mitochondrial DNA

Da part of eukaryotic cell chromosome DNA

Correct answer: A. an extrachromosomal genetic element of bacteria

Plasmids are small, circular, extrachromosomal DNA molecules that can replicate independently in bacteria. They are commonly used as vectors in gene engineering.

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More Recombinant DNA technology MCQs

Which of the following techniques involves the use of restriction enzymes?Which of the following is not a characteristic of Type II restriction enzymes?Which of the following DNA is generally not used as a gene engineering vector?Which of the following is not a basic process in DNA recombinant technology?Which of the following is a necessary condition for a cloning vector?