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NEET 2026, Biology Q82: Biotechnological Applications in Medicine

NEET2026Biology
Q.

The toxin proteins isolated from Bacillus thuringiensis, coded by which of the following genes would contrl cotton bollworms and corn borer, respectively?

  1. A

    cryIAc and cryIAb

  2. B

    cryIAc and cryIIAb

  3. C

    cryIIAb and cryIAc

  4. D

    cryIAc and cryIIIAb

Solution

The Bt toxins are coded by cry genes, and the choice of gene depends on the target pest.

Cotton bollworms are controlled by toxins from cryIAc (and cryIIAb), while corn borer is controlled by toxins from cryIAb.

Hence the correct pairing is cryIAc for cotton bollworms and cryIAb for corn borer.

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