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  4. The repressor of the lac operon is synthesised all the time constitutively from the

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Q. The repressor of the lac operon is synthesised all the time constitutively from the

NTA AbhyasNTA Abhyas 2020Molecular Basis of Inheritance

Solution:

Lac operon is regulated by repressor protein which is synthesized by regulator gene also called as inhibitor gene (i - gene). This active regulator protein binds to the operator and turns the system off, thus structural gene cannot syntheses mRNA and thus enzymes.