Chapter 18 - Chapter18 RegulationofGeneExpression...

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Chapter 18 Regulation of Gene Expression Lecture Outline Overview: Conducting the Genetic Orchestra Both prokaryotes and eukaryotes alter their patterns of gene expression in response to changes  in environmental conditions. In multicellular eukaryotes, each cell type contains the same genome but expresses a different  subset of genes. During development, gene expression must be carefully regulated to ensure that the right genes  are expressed only at the correct time and in the correct place. Gene expression in eukaryotes and bacteria is often regulated at the transcription stage. Control of other levels of gene expression is also important. RNA molecules play many roles in regulating eukaryotic gene expressions. Disruptions in gene regulation can lead to cancer. Concept 18.1 Bacteria often respond to environmental change by regulating transcription. Natural selection favors bacteria that express only those genes whose products are needed by 
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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Chapter 18 - Chapter18 RegulationofGeneExpression...

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