Q.

Bt toxins are

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a

insect species specific

b

insect group specific

c

not specific to any insects

d

specific to pollinator insects

answer is B.

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Detailed Solution

Bt toxins are insect group specific. The toxin is coded by a gene cryIAc named cry. There are a number of them, for example, the proteins encoded by the genes cryIAc and cryIIAb control the cotton bollworms, that of cryIAb controls corn borer.

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