BIOLOGY 1A03 Lecture Notes - Lecture 13: Transcription Factor Ii B, Threonine, Repressor

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30 Oct 2015
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BIOLOGY 1A03 Full Course Notes
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BIOLOGY 1A03 Full Course Notes
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Bio 1a03 lecture 13 eukaryotic transcriptional regulation: all cells in our body start from a single cell. As a zygote, our embryonic stem cells were identical. Dna to rna and contribute to gene regulation. They determine the pathway that a cell follows and determines the mature and differentiated form of the cell. It is that gene that is triggered within dividing embryonic stem cells. By controlling which genes are active along the chromosome, there are an array of cell types found throughout our bodies. In the prokaryotic genome, genes are clustered into an operon transcribed by a single promotor. In the eukaryotic genome, genes are organized into chromatin. Compacting dna into tightly wound eukaryotes makes dna fit into the nucleus. Also, dna is winded into nucleosomes and genes in this tightly wound heterochromatin are usually not expressed. To be able to transcribe a gene, it is necessary to unwind the dna.

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