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Bt cotton has gained significant media attention lately, and its prefix, 'Bt,' refers to:
Cotton seeds are referred to as “Barium-treated.”
A cotton variety with a “bigger thread” size and improved tensile strength.
Created through the utilization of biotechnology, involving restriction enzymes and ligases.
Incorporating an endotoxin gene derived from Bacillus thuringiensis.
Answers (1)
In the case of Bt cotton, scientists have genetically modified the cotton plant by introducing the gene responsible for producing the Cry toxin from Bacillus thuringiensis. This genetic modification allows the cotton plant to produce the toxin itself, making it resistant to the targeted insect pests. When the pests feed on the Bt cotton, they ingest the toxin, which disrupts their digestive system and eventually leads to their death.
By incorporating the endotoxin gene from Bacillus thuringiensis, Bt cotton gains inherent protection against specific insect pests, reducing the need for extensive pesticide use and providing a more environmentally friendly approach to pest management in cotton farming.
Hence, the correct option is 4
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