BIO SCI 97 Lecture 4: Lecture 4 Notes
22 Dec 2018
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Cis-regulation regulation on the same molecule of dna as the genes to be transcribed. Silencer when transcription factors bind to silencers, expression of the gene they. Gene expression: cis-regulation control is repressed: patterns many organs and structure during development. Non-template strand does not code for an mrna. Housekeeping genes expressed in virtually all cells: most genes are not expressed in all cells, each cell contains the same genes, but different cells express different genes, thus producing different proteins. Transcription factor transcription factors that increase the occurrence of transcription are called activators, and those that decrease the occurrence of transcription are called repressors. Insulator enhancers can work at considerable distances: if unchecked a single enhancer could influence many genes, activity of enhances can be checked by the presence of insulators. Transgene introducing a transgene into genome of model organism transgenesis. Template strand the strand used by dna polymerase or rna polymerase to attach.
