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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
In $E.$ coli, the lac operon gets switched on when:
  • ✓
    lactose is present and it binds to the repressor.
  • B
    Repressor binds to operator.
  • C
    $\text{RNA}$ polymerase binds to the operator.
  • D
    lactose is present and it binds to $\text{RNA}$ polymerase.
✓

Answer

Correct option: A.
lactose is present and it binds to the repressor.

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