NEETZoologyMolecular Basis of Inheritance
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): In bacteria, the core RNA polymerase enzyme is capable of independently initiating the process of transcription. Reason (R): The core RNA polymerase is only capable of catalysing the process of elongation and must associate transiently with the initiation factor ( ) to initiate transcription. In th
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
D. (A) is not correct but (R) is correct
Step-by-step solution
Assertion (A) is incorrect because the core RNA polymerase enzyme in bacteria cannot initiate transcription on its own. Reason (R) is correct because the core RNA polymerase is inherently capable of catalysing only the process of elongation. To initiate transcription, it must associate transiently with the initiation factor ( ). This association confers the specificity required to bind to the promoter and initiate transcription. Answer: (A) is not correct but (R) is correct