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Molecular Basis of Inheritance
Lac operon regulation
1 question from 1 paper, each with its answer.
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Concepts tested
- Lac operon regulation
All Questions
2024 Re-NEET 1 question
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Given below are two statements: Statement I: In the lac operon, the z gene codes for beta-galactosidase which is primarily responsible for the hydrolysis of lactose into galactose and glucose. Statement II: In addition to lactose, glucose or galactose can also induce lac operon. In the light of the above statements, choose the correct answer from the options given below:In the lac operon, the z gene (lacZ) codes for beta-galactosidase, which hydrolyses lactose into galactose and glucose, so Statement I is true. Only allolactose (an isomer of lactose) acts as the inducer of the lac operon, not glucose or galactose directly, so Statement II is false.
