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cryII Ab and cry I Ab produce toxins tha...

cryII Ab and cry I Ab produce toxins that control:

A

Cotton bollworms and corn borer respectively

B

Corn borer and cotton bollworms respectively

C

Tobacco budworms and nematodes respectively

D

Nematodes and tobacco budworms respectively

Text Solution

Verified by Experts

The correct Answer is:
A
Specific Bt toxin genes were isolated from Bacillus thuringiensis and incorporated into the several crop plants such as cotton. The choice of genes depends upon the crop and the targeted pest as most Bt toxins are insect - group specific. The toxin is coded by a gene named cry. For example the protein encoded by the genes cryIAC and cryIIAb control the cotton bollworms that of cryIAb controls corn borer
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