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Q.

In lac operon, z gene codes for 

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a

ß-glactosidase

b

repressor

c

transacetylase

d

permease

answer is A.

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Detailed Solution

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In Lac operon, z gene codes for β-galactosidase.
(2) Lac y codes for permease.
(3) ‘i’ gene codes for repressor proteins.
(4) Lac a gene codes for transacetylase.

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In lac operon, z gene codes for