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Gene regulation governing lactose operon...

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

A

Negative and inducible because repressor protein prevents transcription

B

Negative and repressible because repressor protsin prevents trenscription

C

Feedback inhibition decause excess of ~beta`- galactosidase can switch off transcripyion

D

Positive and inducible because it can be induced by lactose

Text Solution

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The correct Answer is:
a
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