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Question

Ti plasmid is used for making transgenic plants. It is obtained from

A
Azotobacter
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B
Agrobacterium
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C
Rhizobium in leguminous root
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D
Yeast
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Solution

The correct option is B Agrobacterium
Ti plasmid is used for making transgenic plants. It is obtained from Agrobacterium tumefaciens. Agrobacterium tumefaciens is a soil plant pathogenic bacterium that carries Ti plasmid which carries the genes that can induce tumor in plants. It can transfer a particular segment of the tumor-inducing (Ti) plasmid into the nucleus of infected cells. The transferred T-DNA is then integrated into the host genome and transcribed with it.

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