When lactose is present, it binds to the repressor protein, changing its shape so it no longer binds to the operator. This allows RNA polymerase to bind to the promoter, leading to the transcription of the structural genes and synthesis of lactose-metabolizing proteins.
When lactose is present, it binds to the repressor protein, changing its shape so it no longer binds to the operator. This allows RNA polymerase to bind to the promoter, leading to the transcription of the structural genes and synthesis of lactose-metabolizing proteins.
| Front | Explain how the lac operon works when lactose is present in the growth medium. |
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| Back | Lac operon, lactose:
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