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Bt-cotton is resistant to pest, such as ...

Bt-cotton is resistant to pest, such as lepidopteron, dipterans and coleopterans. Is Bl-cotton resistant to other pests as well?

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Bt cotton is made resistant to only certain specific taxa of pests. It is quite likely that in future, some other pests may infest this Bt-cotton plants. It is similar immunisation against small-pox which does not provide immunity against other pathogens like those that cause cholera, typhoid etc.
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