Which of the following crops are now genetically modified by...

Which of the following crops are now genetically modified by Bt-toxin gene?
(A) Cotton
(B) Corn
(C) Rice
(D) Tomato
(E) Potato
(F) Soyabean
(a) A, B and C only
(b) D and E only
(c) A and $\mathrm{F}$ only
(d) All of these

Key Concepts

Insect Resistance in Crops

Incorporating the Bt-toxin gene into crops is a widely used strategy to enhance their inherent resistance to insect pests, particularly in crops that are vulnerable to lepidopteran insects. This genetic modification results in reduced reliance on chemical insecticides and can lead to improved crop yields and decreased environmental impact.

Commercial Deployment of Bt Crops

Bt crops, such as cotton and corn, are among the most prominent examples of commercial biotechnology in agriculture. Their development and widespread adoption illustrate how transgenic approaches can offer effective, economic, and ecological benefits in pest management, despite ongoing debates about biosafety and regulatory issues.

Genetically Modified Organisms (GMOs)

GMOs are organisms whose genetic material has been altered using genetic engineering techniques to introduce new traits or characteristics. This modification can provide traits like pest resistance, herbicide tolerance, or improved nutritional content, making them a key tool in modern agriculture.

Bt-toxin Gene

The Bt-toxin gene, derived from Bacillus thuringiensis, encodes proteins that are toxic to specific insect pests. When introduced into a plant, this gene enables the plant to produce its own insecticide, thereby reducing the need for chemical pesticides and contributing to sustainable pest management.

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