Multiple choice

Why is Agrobacterium tumefasciens known as “natural genetic engineer”?

  1. It has the natural ability to insert a part of its plasmid DNA into a plant’s genomic DNA.

  2. It contains a plasmid that can cut out genes from the plant genome.

  3. It contains a gene that codes for a protein similar to human insulin.

  4. It causes tumors in plants and changes its protein expression.

  5. Its plasmid codes for an insecticidal toxin-producing gene.
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A Correct answer
Explanation

Agrobacterium tumefasciens has a tumor-inducing plasmid, which has a specific region called T-DNA. This T-DNA gets integrated in the plant genome. Since it happens as a natural phenomenon, the bacterium is called a natural genetic engineer.

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