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  • Gene regulation governing lactose operon of E.coli that involves the lac I gene product is:Option: 1 negative and repressible because repres

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

Option: 1

negative and repressible because repressor protein prevents transcription


Option: 2

Feedback inhibition because excess of \beta-galactosidase can switch off transcription


Option: 3

Positive and inducible because it can be induced by lactose


Option: 4

negative and inducible because repressor protein prevents transcription.


Answers (1)

best_answer

Lac I gene produces an inhibitor or repressor and negative regulation of lac operon is induced. The repressor binds to the operator gene and stops its working. The repressor is meant to block the operator gene so that structural genes are unable to form mRNA thus stopping the transcription of genes.

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HARSH KANKARIA

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