CUET · BIOLOGY · PYQ PAPER 2025
Which one of the following events is true about the lac operon in the absence of an inducer?
- A The repressor is inactivated
- B Repressor binds to the operator and prevents RNA polymerase from transcribing the operon
- C Beta-galactosidase, transacetylase and permease will be produced
- D RNA polymerase have access to the promoter and transcription proceeds
Answer & Solution
Correct Answer
(B) Repressor binds to the operator and prevents RNA polymerase from transcribing the operon
Step-by-step Solution
Detailed explanation
Repressor binds to the operator and prevents RNA polymerase from transcribing the operon
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