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Introduction. Every cell in a multi-cellular eukaryote does not express all its genes, all the time (usually only 3-5%)Long-term control of gene expression in tissue = differentiationHow to prevent expression?Regulation at transcriptionRegulation after transcription. . . Chromatin Regulation. Chromatin remodeling allows transcriptionChromatin = DNA proteinsChromatin coiled around histones = nucleosomesAllows DNA to be packed into nucleus, but also physically regulates expression by maki1146

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