MCQ
In the lac operon, the structural genes are switched off when
  • Repressor binds to operator
  • B
    Repressor binds to promotor
  • C
    Repressor binds to regular
  • D
    Repressor binds to inducer

Answer

Correct option: A.
Repressor binds to operator
a
(a)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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