NEET 2015 Biology Cancelled Paper

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Question : 39 of 90

Marks: +1, -0

Gen regulation governing lactose operon of E.coli that involves the lac I gene product is :

[NEET 2015 C]

Negative and inducible because repressorprotein prevents transcription
Negative and repressible because repressorprotein prevents transcription
Feedback inhibition because excess of β-galactosidase can switch off trascription
Positive and inducible because it can be induced by lactose

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