Insect-resistance transgenic cotton has been produced by inserting a piece of DNA from:

A virus

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A bacterium

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A wild variety of cotton

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An insect

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Solution

The correct option is B A bacterium
Insect-resistant transgenic cotton has been produced by inserting a piece of DNA from the bacterium $B a c i l l u s$ $t h u r i n g i e n s i s$ . The DNA encodes for a protein called cry protein which acts as a toxin for a large number of insects. Thus when these insects consume the plants, they die due to the presence of the toxin.

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