NEET 2024 Zoology Cry Genes and Activation Assertion Reason Question
Given below are two statements:
Statement I: Bt toxins are insect group specific and coded by a gene cry IAc.
Statement II: Bt toxin exists as inactive protoxin in B. thuringiensis. However, after ingestion by the insect the inactive protoxin gets converted into active form due to acidic pH of the insect gut.
In the light of the above statements, choose the correct answer from the options given below:
Statement I is true but Statement II is false
Statement I is false but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false
Correct Answer
Detailed Explanation
Bt toxins are specific to certain insect groups and are coded by specific genes. The protoxin form is activated in the insect gut due to the acidic environment.
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