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Biotechnology and its Applications

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Advanced Zoology

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  1. In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to:
    1. Acidic pH of the insect gut
    2. Action of gut micro-organisms
    3. Presence of conversion factors in insect gut
    4. Alkaline pH of the insect gut
Correct Option: D

Bt toxin are solubilised in alkaline pH of the insect gut causing death.


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