Regulation of gene expression in prokaryotes

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Last updated 12:45 PM on 4/8/26
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8 Terms

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Inducible operon

off until substrate is present

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Repressible operon

on until product is provided

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I-

repressor can’t bind to operator, RNA pol has clear path

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Is

repressor can’t bind to inducer, operon permanently off

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Oc

Repressor cannot bind, transcription is constant

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P-

RNA pol can’t bind to DNA

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Z-

enzyme is nonfunctional, nothing is ever produced

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reasons for gene regulation

adapt to environment, ensure only necessary genes are expressed, differentiate cell function