Campbl19 - Metazoan Phenotypic Complexity Less Transcription Chromatin Packing Less Methylation Histones(Nucleosomes Loops of 30 nm Chromatin

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Metazoan Phenotypic Complexity
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Chromatin Packing Less Transcription Less Methylation
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Histones (Nucleosomes)
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Loops of 30 nm Chromatin
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Eu- vs. Hetero-Chromatin Euchromatin Hetero- chromatin
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Phenotypic “Plasticity” To survive, organisms must be able to adapt to changes in their environments These adaptations can occur at many different levels: 1. Organisms can change their behaviors (ch. 51) 2. Organisms can modify the expression of their proteins 3. Organisms can change what genes are expressed (ch. 11, 4. Organisms can display norms of reaction during development and/or can acclimitize (ch. 14, 21, 44) 5. Culture (learned behavior) can be modified (ch. 34) 6. Populations can genetically evolve (ch. 22 & 23)
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Control of Eukaryote Gene Expression
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Signal Transduction Pathways
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Control of Eukaryote Gene Expression
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Genomic Imprinting
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Control of Eukaryote Gene Expression
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Positive Control (in prokayotes) Protein-DNA binding Enhances Transcription
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This note was uploaded on 06/03/2011 for the course BIO 113 taught by Professor Swenson during the Spring '08 term at Ohio State.

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Campbl19 - Metazoan Phenotypic Complexity Less Transcription Chromatin Packing Less Methylation Histones(Nucleosomes Loops of 30 nm Chromatin

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