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bio 2 Eukaryotic Gene regulation

bio 2 Eukaryotic Gene regulation - at repressors Recruit...

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Eukaryotic Gene regulation What are three fundamental facts about gene expression 1. All cells in a multicellular organism contains the exact same genetic complement 2. any cell expresses only a small fraction of its genes at any given time 3. regulation of the expression of specific genes most common at the level of transcription Gene expression depends on The cell receiving the signal in which then regulation can occur in many steps What is the importance of transcription factors They are necessary for transcription of all genes What are control elements Transcription factor binding sites Transcription factors that are activators have what function Recruit proteins that acetylate near by histones What is the function of transcription factors that act
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Unformatted text preview: at repressors Recruit proteins that deacetylate near by histones In gene expression what does the bending of the DNA enable Enables enhancers to influence a promoter hundreds of nucleotides away Gene expression ultimately depends on The amount of gene product of protein or RNA Gene expression can be regulated post-transcriptionally by 1. alternative RNA splicing- different mRNA molecules are produced from the same primary transcript 2. mRNA degradation 3. regulating translation- maternal effect in which genes lack poly-A tail 4.post-translational control What are microRNAs (miRNAs) Bind to complementary sequences in mRNA molecules...
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