NEET · Biology —

Biotechnology and its Applications appeared 2 times across 1 year — 2.2% of Biology. This question is from Bt Cotton.

Year 2024 Total
Questions 2 2
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The toxin proteins isolated from Bacillus thuringiensis, coded by which of the following genes would control cotton bollworms and corn borer, respectively?

Solution & Explanation

Core Logic

Specific Bt toxin genes were isolated from Bacillus thuringiensis and incorporated into several crop plants such as cotton. The choice of genes depends upon the crop and the targeted pest. The proteins encoded by the genes crylAc and cryllAb control the cotton bollworms. The protein encoded by crylAb controls the corn borer.

Step 1: Final Conclusion

Therefore, the sequence requested is for cotton bollworms (crylAc) and corn borer (crylAb).

Pattern Recognition

Cotton bollworms = cryIAc & cryIIAb. Corn borer = cryIAb.

Chapter Mix

Class 12 Biology: Biotechnology and its Applications

Reference Study Guides

Biotechnology And Its Applications

More Biotechnology and its Applications Previous-Year Questions

Q162 neet_2026_03_may_morning Transgenic Animals
The human protein named α - 1 -antitrypsin, obtained from transgenic animals, is used for the treatment of ____.
  • A. Alzheimer's disease
  • B. Emphysema
  • C. Rheumatoid arthritis
  • D. Cystic fibrosis

Solution

Core Logic

The human protein named α-1-antitrypsin, obtained from transgenic animals, is specifically used for the treatment of emphysema. Transgenic models exist for the study of other diseases, such as Alzheimer's disease, rheumatoid arthritis, and cystic fibrosis, but α-1-antitrypsin is specifically for emphysema.

Pattern Recognition

Alpha-1-antitrypsin deficiency directly causes lung tissue breakdown. Thus, it treats emphysema.

Chapter Mix

Class 12 Biology: Biotechnology and its Applications

More Biotechnology and its Applications Questions — neet_2026_03_may_morning

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Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)