Slide 1 Gene Expression Prokaryotes and Viruses BIT 220 Chapter 23 Slide 2 Types of Regulatory Mechanisms Rapid turn-on and turn off of gene expression (responds to some…

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Molecules and atoms can absorb ultraviolet and visible electromagnetic radiation and be raised to excited electronic states. The reverse process, transition from an excited…

* Genetic regulation Genotype is not phenotype: bacteria possess many genes that they are not using at any particular time. Transcription and translation are expensive; why…