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Lac Operon: Mechanism of Regulation, Catabolite Repression

Operon

An operon is a functional unit of genomic DNA in prokaryotes (bacteria and archaea) that consists of a set of adjacent genes transcribed together as a single mRNA molecule. This coordinated arrangement of genes allows for the regulation and expression of multiple proteins involved in a common biological pathway or function.

Components of operon

Promoter: The promoter is a DNA sequence located at the beginning of the operon where RNA polymerase binds to i…

… (911 more words, 32 figures) …

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