7_BIOL1510_module4_7_genomes

7_BIOL1510_module4_7_genomes - Genomes and regulation of...

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Unformatted text preview: Genomes and regulation of gene expression How do prokaryotic and eukaryotic genomes differ in size and organization? Why is the human genome so big? How is gene expression regulated in prokaryotes and eukaryotes? mRNA 5 5 3 RNA polymerase Permease Transacetylase lac operon -Galactosidase lacY lacZ lacA lac I Q: Which species has the biggest genome? 2 3 4 5 1 6 7 Amoeba proteus 8 Organization of prokaryotic genomes Q: Operons: A. Are composed of tenons, bassons, sopranons and altons B. Are multiple protein coding genes transcribed as a single mRNA from a common promoter C. Must have operators D. Are present in both eukaryotes and prokaryotes E. All of the above except A What mechanisms enable bacterial genomes to evolve rapidly? Prokaryotes vs Eukaryotes Genome Size, composition Genome topology Chromosome location Transcription/ translation RNA processing Gene organization Q: How do eukaryotic genomes differ from prokaryotic genomes? A. Eukaryotic operons are much larger than prokaryotic operons B. Eukaryotic chromosomes are linear; prokaryotic chromosomes are circular. C. Eukaryotic genomes are fragmented into multiple chromosomes bacterial genomes typically have a single chromosome....
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7_BIOL1510_module4_7_genomes - Genomes and regulation of...

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