Negative and Positive Control Inducible and Repressible Operons

There are two types of transcriptional control: negative control, in which a regulatory protein acts as a repressor, binding to DNA and inhibiting transcription; and positive control, in

| An operon is a group of structural genes plus sequences that control transcription.

Operon

Operator

Regulator gene

A separate regulator gene— f with its own promoter—...

mRNA

A separate regulator gene— f with its own promoter—...

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