Gene Expression and the Genetic Code Video Lessons

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Problem: Compare Positive Regulation of gene expression with Negative Regulation of gene expression. Which includes and activator and which includes a repressor?

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  • Positive Regulation is the binding of specific protein (activator) is required for transcription to begin. DNA bound activators can regulate transcription by helping with ignition. Negative Regulation is the binding of a specific protein (repressor) that inhibits transcription from occurring. DNA bound repressors often act to prevent RNA polymerase from binding to the promoter, or by blocking the movement of RNA polymerase.
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Compare Positive Regulation of gene expression with Negative Regulation of gene expression. Which includes and activator and which includes a repressor?

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