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Question: Answered & Verified by Expert
In operon concept, regulator gene functions as:
BiologyMolecular Basis of InheritanceNEET
Options:
  • A Repressor 
  • B Regulator
  • C Inhibitor
  • D All of these
Solution:
2656 Upvotes Verified Answer
The correct answer is: All of these
An operon consists of a cluster of genes under the control of a single promoter. It possesses an operator, a promoter, a regulator and structural genes.
The regulator gene produces repressor protein which binds to the operator and thus inhibits the transcription of the structural genes (repressor).
It also regulates the transcription of the structural genes (regulator).
The product of the regulator gene is an inhibitor that keeps the operon model turned off.

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