If an agriculture field is sprayed with insecticides, often the non-resistant insects are replaced by resistant insects that are no longer affected by the insecticide.
- A heritable alteration in a pest population's susceptibility to a certain insecticide or set of insecticides is known as insecticide resistance.
- Regardless of how a crop protection was created, insects may evolve a resistance to it.
- A chemical or biological weapon, a gene from the crop species that has been bred into commercial plants using traditional plant breeding techniques, or a gene inserted using recombinant DNA technology could all be used as a crop defense.
- Due to their unique genetic make-up, a tiny fraction of the pest population may survive exposure to a pesticide after its initial application. The genes for resistance are passed on to the following generation by these people.
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