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NEETZoology-Molecular Basis of Inheritance

NEET Zoology Lac Operon MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Select the incorrect pair w.r.t. Lac operon.

A

Structural gene - Transcribes mRNA for polypeptide synthesis

B

Operator gene - Interact with inducer and prevent the transcription of structural gene

C

Promoter gene - Possess site for RNA polymerase attachment

D

Regulator gene - Controls the activity of operator gene

Correct Answer

Option B

Detailed Explanation

The operator gene does not interact with the inducer; it is the site where the repressor binds to prevent transcription.

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