The idea when creating Bt cotton was to protect the susceptible cotton plant from the attacks of insects and pests, especially the bollworm, and consequently to reduce the use of insecticides and pesticides.
The Cry1Ac and Cry2Ab genes that are involved in the modification of cotton to produce the GMO produce and release a chemical that has been proven to kill certain insects. The Cry1Ac gene mainly targets the cotton Bollworm, while the combination of the Cry1Ac and Cry2Ab genes targets a much larger range of harmful insects that could cause a lot of damage to the plant or introduce the need to use a large amount of insecticides and pesticides.
(How Was Bt Cotton Produced? (n.d.))
When a pest, for example the destructive bollworm, feeds on a Bt cotton plant, the pest will become lethargic and sleepy, reducing the damage it is able to do to the plant.
(Verma, R. (2013, July 30))
The Cry1Ac and Cry2Ab genes that are involved in the modification of cotton to produce the GMO produce and release a chemical that has been proven to kill certain insects. The Cry1Ac gene mainly targets the cotton Bollworm, while the combination of the Cry1Ac and Cry2Ab genes targets a much larger range of harmful insects that could cause a lot of damage to the plant or introduce the need to use a large amount of insecticides and pesticides.
(How Was Bt Cotton Produced? (n.d.))
When a pest, for example the destructive bollworm, feeds on a Bt cotton plant, the pest will become lethargic and sleepy, reducing the damage it is able to do to the plant.
(Verma, R. (2013, July 30))