The lac operon model of Jacob and Monod already shows a

The lac operon model of Jacob and Monod already shows a - (...

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The lac operon model of Jacob and Monod already shows a central principle of gene regulation which is true in both prokaryotes and eukaryotes: control of transcription is mediated by the interaction of regulatory proteins with specific DNA sequences . Specific regulatory DNA sequences are called cis -acting control elements because they only affect the regulation of genes they are linked to on the same DNA molecule
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Unformatted text preview: ( cis is latin for something like "this side"). Regulatory proteins are called trans-acting factors because as proteins they can diffuse and affect the regulation of genes on other chromosomes as well ( trans is latin for something like "the other side")....
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