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  4. Cry endotoxins obtained from Bacillus thuringiensis are effective against

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Q. Cry endotoxins obtained from Bacillus thuringiensis are effective against

AIPMTAIPMT 2008Biotechnology and its Applications

Solution:

Bt toxin is insect group-specific and is coded by a gene named cry. These genes were isolated from Bacillus thuringeneses and are incorporated into several crop plants. The proteins encoded by the genes cry Ac and cry Ab control the cotton boll worms.