In Operon concept, the regulator gene regulates chemical reactions in the cell by

  • [AIIMS 1985]
  • A

    Inactivating enzymes in the reaction

  • B

    Inhibiting transcription of $mRNA$

  • C

    Inhibiting migration of $mRNA$ into cytoplasm

  • D

    Inhibiting the substrate in the reaction

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  • [AIPMT 2005]

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