Crown gall disease in plants is caused by

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(A) Crown gall disease in plants is caused by the bacterium $Agrobacterium$ $tumefaciens$. This bacterium contains a specific plasmid known as the tum

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$Ti-$ plasmid

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(A) Crown gall disease in plants is caused by the bacterium $Agrobacterium$ $tumefaciens$. This bacterium contains a specific plasmid known as the tumour-inducing or $Ti-$ plasmid. The $Ti-$ plasmid is responsible for transferring a segment of $DNA$, known as $T-DNA$, into the plant genome, which leads to the formation of crown galls (tumours).

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