First slide

Biotechnological Applications in Agriculture

Question

Cry II Ab and cry I Ac produce toxins that control

Easy

A

cotton bollworms and corn borer respectively.
B

cotton borer and cotton bollworms respectively
C

tobacco budworms and nematodes respectively.
D

nematodes and tobacco budworms respectively

Solution

Bt toxin genes were isolated from Bacillus thuringiensis and incorporated into several crop plants such as cotton. The toxin is coded by gene named cry. Two cry genes - cry I Ac and cry II Ab have been incorporated in cotton. The proteins encoded by genes cry II Ab and cry I Ac control cotton bollworms and that of cry I Ab controls cornborer.

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