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311C F08 Worksheet_14 - they bind 8 List the stages of gene...

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NAME ________________________________ Bio 311C F08 Discussion Worksheet #14 Gene Regulation 1. Transcription and translation are typically coupled in prokaryotes. Explain what this means. Why is this possible in prokaryotes and not eukaryotes? 2. Describe the structure of a typical operon. How many genes are found in an operon? 3. What is an inducible operon? A repressible operon? 4. What is the function of the trp operon? 5. Describe the regulation of the trp operon (a) in the presence of tryptophan and (b) the absence of tryptophan. Name all components involved and tell where they bind. 6. What is the function of the lac operon? 7. Describe how the lac operon is regulated by both lactose levels and glucose levels. Name all components involved and tell where
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Unformatted text preview: they bind. 8. List the stages of gene expression in a eukaryotic cell. At which points can gene expression be regulated? 9. How does histone acetylation regulate gene expression? Deacetylation? 10. What is DNA methylation? How does it regulate gene expression? 11. Compare general transcription factors and specific transcription factors. 12. Describe how multiple genes involved in a common process can be expressed at the same time in a eukaryotic cell. 13. What is alternative RNA splicing? 14. Describe 2 ways the cell can control the lifetime of an mRNA in the cell....
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