Which of the following is a natural genetic engineer of plants?

Yeast

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Agrobacterium

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E. coli

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Mycoplasma

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Solution

The correct option is B Agrobacterium
A. tumefaciens (a pathogen of several dicot plants) has natural ability to transfer T-DNA of their Ti (tumour inducing) plasmids into plant genome upon infecting them. This causes an unorganised growth of a cell mass or tumor known as crown gall. A. tumefaciens, thus functions as a natural genetic engineer of plants.

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