Multiple choice

Identify the incorrect statement/s.

  1. A cloning vector is a small piece of DNA into which a foreign DNA fragment can be inserted for cloning purposes.

  2. Shuttle vectors can be used in both eukaryotes and prokaryotes.

  3. Plasmids that can be propagated in cells of two or more different species are called expression vectors.

  4. Plasmids are circular pieces of double stranded DNA that exist separately from chromosomal DNA.

  5. Replacement vector is a cloning vector in which part of the normal genome is replaced by foreign DNA.
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C Correct answer
Explanation

Plasmids that can be propagated in cells of two or more different species are called shuttle vectors. An expression vector is generally a plasmid that is used to introduce a specific gene into a target cell.

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