In the bacterium E.coli,a repressor protein binds to the operator region of the DNA in the absence of lactose,thus preventing the transcription of the genes of the lactose operon.

Name: In the bacterium E.coli ,a repressor protein binds to the operator region of the DNA in the absence of lactose,thus preventing the transcription of the genes of the lactose operon.
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In the absence of lactose, a repressor protein binds to the operator and prevents transcription. The enzymes are not produced.

In the Bacterium E