Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 16.1, Problem 3R
Summary Introduction
To review:
The effect of the action of the sigma factor and recognition sequences on the expression of classes of genes.
Introduction:
The sigma factors are protein subunits of the enzyme ribonucleic acid (RNA) polymerase required for the initiation of the transcription process. Recognition sequences help to initiate the process of transcription by binding the RNA polymerase with the promoter. Gene expression of certain genes is controlled by the sigma factors who share recognition sequences or recognition sites in the promoters.
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Chapter 16 Solutions
Life: The Science of Biology
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- What is the relationship between promoters, regulatory DNA sequences, and transcription regulators? How are they used to control gene expression?arrow_forwardHow does alternative splicing affect gene expression?arrow_forwardWhat are the major differences between a repressor protein anda riboswitch in the control of gene expression?arrow_forward
- How does one locate the places on the gene where a particular transcription factor binds, or where nucleosomes with specific modifications are localized?arrow_forwardWhat biomolecule are promoters and enhancers composed of?arrow_forwardHow do mediators, gene-specific transcription factors (activators/repressors), general transcription factors, and RNA polymerase interact? How do they initiate transcription?arrow_forward
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