In lac operon,the switching on or switching o | vedclass

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(B) In the $lac$ operon,the expression of structural genes is regulated by a repressor protein,which is the product of the regulator gene ($i$ gene).W

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regulator protein

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(B) In the $lac$ operon,the expression of structural genes is regulated by a repressor protein,which is the product of the regulator gene ($i$ gene).When the inducer (lactose) is absent,the repressor protein binds to the operator region,preventing $RNA$ polymerase from transcribing the structural genes (switching off).When the inducer (lactose/allolactose) is present,it binds to the repressor protein,causing a conformational change that prevents the repressor from binding to the operator,thereby allowing transcription to proceed (switching on).Thus,the regulator protein is responsible for switching the operator on or off.

In $lac$ operon,the switching on or switching off of the operator is achieved by . . . . . . .

Similar Questions

Statement $I$: Lac operator is present only in $lac$-operon and it interacts specifically with $lac$-repressor only.
Statement $II$: Each operon does not have a specific operator and a specific repressor.

Which of the following acts as an inducer for the $lac$ operon in $Escherichia$ $coli$?

Which organism was used by Beadle and Tatum to propose the one gene-one enzyme hypothesis?

In the $lac$ operon model,lactose molecules function as:

Describe the regulation of gene expression in prokaryotes with an example.

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