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Question
In E. coli, during lactose metabolism, repressor binds to:
In E. coli, during lactose metabolism, repressor binds to:
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Solution
The correct option is B Operator gene
In the lac operon of E. coli, due to the activity of regulator gene, synthesis of repressor molecules occurs. These repressor molecules get attached to the operator gene and thus check m-RNA synthesis, and because of this no protein synthesis occurs.
A regulator gene is a gene involved in controlling the expression of one or more other genes.
A structural gene is a gene that codes for any RNA or protein product other than a regulatory factor.
A promoter is a region of DNA where transcription of a gene is initiated.
In the lac operon of E. coli, due to the activity of regulator gene, synthesis of repressor molecules occurs. These repressor molecules get attached to the operator gene and thus check m-RNA synthesis, and because of this no protein synthesis occurs.
A regulator gene is a gene involved in controlling the expression of one or more other genes.
A structural gene is a gene that codes for any RNA or protein product other than a regulatory factor.
A promoter is a region of DNA where transcription of a gene is initiated.
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