Bt cotton is used to destroy: | vedclass

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Question

(A) $Bt$ cotton is a genetically modified crop that expresses the $cry$ gene derived from the bacterium $Bacillus$ $thuringiensis$. This gene produces

Vedclass · Accepted Answer

Caterpillar of butterfly

Vedclass · Answer

(A) $Bt$ cotton is a genetically modified crop that expresses the $cry$ gene derived from the bacterium $Bacillus$ $thuringiensis$. This gene produces a crystal protein (Cry protein) that acts as an insecticidal toxin. When the caterpillar (larva) of certain butterflies,such as the bollworm,ingests the plant tissue,the alkaline $pH$ of the insect's gut solubilizes the crystal protein. This activated toxin binds to the surface of midgut epithelial cells,creating pores that cause cell swelling and lysis,eventually leading to the death of the caterpillar.

$Bt$ cotton is used to destroy:

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