Q. What does “Bt” stand for in the popular Bt cotton?
NTA AbhyasNTA Abhyas 2020
Solution:
Solution:
Bt stands for Bacillus thuringiensis, a soil bacterium from which the toxin producing genes cryIAc and cryIIAb are incorporated in cotton plants to control bollworms. The toxin proteins are toxic to some insects when digested, but not to others. The proteins are not toxic to humans because, like all mammals, we cannot activate them.