Plasmids are used as cloning vectors for which of the following reasons?
Correct answer: B. Self-replication in bacterial cells
- A. Can be multiplied in culture
- B. Self-replication in bacterial cells
- C. Can be multiplied in laboratories with the help of enzymes
- D. Replicate freely outside bacterial cells
Explanation
Plasmids are useful cloning vectors because they contain an origin of replication and can replicate independently inside bacterial cells, producing many copies of inserted DNA. The option saying they can be multiplied in culture is incomplete, while plasmids cannot replicate freely outside living bacterial cells.
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--- is used as a vector for cloning into higher organisms.