Question
Biology Question on Applications of Biotechnology
Cry endotoxins obtained from Bacillus thuringiensis are effective against
A
nematodes
B
boll worms
C
mosquitoes
D
flies.
Answer
boll worms
Explanation
Solution
Bt toxin is insect group-specific and is coded by a gene named cry. These genes were isolated from Bacillus thuringeneses and are incorporated into several crop plants. The proteins encoded by the genes cry Ac and cry Ab control the cotton boll worms.