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): During transcription, the opening of the DNA double helix requires the enzyme DNA helicase. Reason (R): DNA-dependent RNA polymerase inherently facilitates the opening of the DNA helix during the process of transcription. In the light of the above statements, choose the correct answer from the opti
Options
- ABoth (A) and (R) are true and (R) is the correct explanation of (A)
- BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
- C(A) is true but (R) is false
- D(A) is false but (R) is true
Correct answer
D. (A) is false but (R) is true
Step-by-step solution
Assertion (A) is false because a separate DNA helicase enzyme is not required to unwind the DNA double helix during transcription. DNA helicase is primarily involved in unwinding the helix during DNA replication. Reason (R) is true because the enzyme DNA-dependent RNA polymerase itself facilitates the opening of the DNA helix and continues elongation during transcription. Therefore, (A) is false but (R) is true. Answer: (A) is false but (R) is true