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#Question id: 2673


For a repressible operon to be transcribed, which of the following must be true?

#SCPH06 I Botany
  1. A corepressor must be present.

  2. RNA polymerase must bind to the promoter, and the repressor must be inactive.

  3. RNA polymerase and the active repressor must be present.

  4. RNA polymerase cannot be present, and the repressor must be inactive.


Answer:- Option(s): 2


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