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, RNA polymerase transiently binds with initiation factor ( ) and termination factor ( ). Reason (R): The core RNA polymerase enzyme is only capable of catalysing the process of elongation. In the light of the above statements, choose the most appropriate answer from the options given be
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
A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
Step-by-step solution
In prokaryotes, a single DNA-dependent RNA polymerase catalyses the transcription of all types of RNA. The core RNA polymerase enzyme is only capable of catalysing the process of elongation. To initiate and terminate transcription, it must associate transiently with the initiation factor ( ) and termination factor ( ), respectively. Therefore, both Assertion (A) and Reason (R) are correct, and (R) provides the correct explanation for why the core enzyme must bind to these factors in (A). Answer: Both (A) and (R) ar