(i) Recombinant DNA technology is used to improve crop plants by increasing their productivity, by making them more nutritious and by developing disease resistant. |
(ii) Bt cotton is resistant to bollworm infestation. |
(iii) Bacillus thuringiensis form cry protein during any phase of their growth. |
(iv) Bacillus thuringiensis is not harmed by self cry protein because of its occurrence as protoxin (inactive). |
(v) Protoxin cry protein is changed into active cry protein in the stomach of insects due to alkaline pH in stomach. |
A) (i), (ii) and (iv)
B) (i) and (iv)
C) Only (iii)
D) All of the above
Correct Answer: C
Solution :
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