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Question: Answered & Verified by Expert
In the lac operon, the structural genes are switched off when:
BiologyMolecular Basis of InheritanceNEET
Options:
  • A Repressor binds to operator
  • B Repressor binds to promoter
  • C Repressor binds to regulator
  • D Repressor binds to allolactose
Solution:
2286 Upvotes Verified Answer
The correct answer is: Repressor binds to operator
A short sequence of DNA where the repressor binds preventing RNA polymerase from attaching to the promoter this is called on/off switch of transcription.

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