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What the 'z' gene in the lac operon encodes.
Biology
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3 stepsThe question asks what the 'z' gene in the lac operon encodes.
Recall the components of the lac operon.
The lac operon consists of three structural genes: lacZ, lacY, and lacA. These genes are responsible for the metabolism of lactose.
Identify the function of the lacZ gene.
The lacZ gene encodes the enzyme beta-galactosidase. This enzyme is crucial for breaking down lactose into glucose and galactose.
Evaluate the given options.
- (1) Repressor of the lac operon: This is encoded by the lacI gene, not lacZ.
- (2) Transacetylase: This is encoded by the lacA gene.
- (3) Permease: This is encoded by the lacY gene.
- (4) बीटा-गैलेक्टोसिडेज (Beta-galactosidase): This is encoded by the lacZ gene.
The correct option is (4).
The final answer is
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