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(B) $Bt$ cotton is a genetically modified organism $(GMO)$ created by inserting the cry genes from the bacterium $Bacillus$ $thuringiensis$ into the c

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Insect pests

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(B) $Bt$ cotton is a genetically modified organism $(GMO)$ created by inserting the cry genes from the bacterium $Bacillus$ $thuringiensis$ into the cotton plant genome.These genes encode for crystal $(Cry)$ proteins,which are toxic to specific groups of insects.When insect pests,such as bollworms,feed on the tissues of the $Bt$ cotton plant,the protoxin is activated in their alkaline gut,leading to cell lysis and the death of the insect.Therefore,$Bt$ cotton is specifically resistant to insect pests.

$Bt$ cotton variety that was developed by the introduction of toxin gene of $Bacillus$ $thuringiensis$ $(Bt)$ is resistant to

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