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Question

In lac operon, ‘i' gene codes for


A

Inducer of lac operon

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B

Repressor of lac operon

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C

Hydrolysis of disaccharide

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D

Permease

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Solution

The correct option is B

Repressor of lac operon


i – gene codes for inhibitor or repressor. Z-gene codes for β-galactosidase for hydrolysis of lactose (disaccharide). Lactose is the repressor of lac operon. Y – gene codes for lactose permease.


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