Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 13, Problem 3P
What is meant by the term chromatin remodeling? Describe the importance of this process to transcription.
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Euchromatin is said to be transcriptionally-active while Heterochromatin is said to be transcriptionally-inactive. What does this mean?
Transcriptionally active chromatin are generally found near the outer regions of the nucleus near the membrane.
true or false?
In eukaryotic transcription what is the function of a histone chaperone? Of a
chromatin remodeling complex? Of Mediator?
Chapter 13 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 13 - 13.1 Devoting a few sentences to each, describes...Ch. 13 - 13.2 Describe and give an example (real or...Ch. 13 - What is meant by the term chromatin remodeling?...Ch. 13 - 13.4 What general role does acetylation of histone...Ch. 13 - 13.5 Describe the roles of writers, readers, and...Ch. 13 - Outline the roles of RNA in eukaryotic gene...Ch. 13 - 13.7 What are the roles of the Polycomb and...Ch. 13 - Most biologists argue that the regulation of gene...Ch. 13 - Compare and contrast the transcriptional...Ch. 13 - The term heterochromatin refers to heavily...
Ch. 13 - 13.11 Compare and contrast promoters and enhancers...Ch. 13 - 13.12 What are the different chromatin...Ch. 13 - 13.13 Define epigenetics, and provide examples...Ch. 13 - What is one proposed role for lncRNAs?Ch. 13 - 13.15 What are the sources of dsRNA? Diagram the...Ch. 13 - How does dsRNA lead to posttranscriptional gene...Ch. 13 - 13.17 A hereditary disease is inherited as an...Ch. 13 - Prob. 18PCh. 13 - Prob. 19PCh. 13 - 13.20 A muscle enzyme called ME is produced by...Ch. 13 - Using the components in the accompanying diagram,...Ch. 13 - 13.22 The majority of this chapter focused on gene...
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- The interphase nucleus is a highly structured organelle with chromosome territories, interchromatin compartments, and transcription factories. In cultured human cells, researchers have identified approximately 8000 transcription factories per cell, each containing an average of eight tightly associated RNAP II molecules actively transcribing RNA. If each RNAP II molecule is transcribing a different gene, how might such a transcription factory appear? Provide a simple diagram that shows eight different genes being transcribed in a transcription factory and include the promoters, structural genes, and nascent transcripts in your presentation.arrow_forwardWhat kind of changes Transcription Requires in Chromatin Structure and Nucleosome Position?arrow_forwardChromatin remodeling by the SWI /SNF complex requires hydrolysis of ATP. What purpose does this serve?arrow_forward
- What are the role of transcription proteins? Explain briefly at your own wordsarrow_forwardWhat does “Universality and Degeneracy” of the Genetic Code mean? State the significance of both the code’s Universality and Degeneracy.arrow_forwardWhy Transcription Requires Changes inChromatin Structure and NucleosomePosition?arrow_forward
- Consider the Rho-dependent terminator sequence 5’CCCAGCCCGCCUAAUGAGCGGCCUUUUUUUU-3’. What affect would a point mutation at any one of the bolded and underlined nucleotides disrupt termination of transcription? Group of answer choices Mutation in one of these nucleotides would disrupt base pairing, preventing the formation of the hairpin and disrupting termination. Mutation in one of these nucleotides would have no affect on base pairing, so the termination hairpin is formed and termination proceeds. Mutation in one of these nucleotides would not disrupt base pairing, but would prevent the formation of the hairpin and disrupt termination. Mutation in one of these nucleotides would disrupt base pairing, but not affect the formation of the hairpin and termination proceeds.arrow_forwardWhat is the difference between chromatin-remodeling and histone modification?arrow_forwardWhat effect would inhibitors of histone deacetylases have upon transcription? Group of answer choices They would increase transcription by making the chromatin more compact They would increase transcription by making the chromatin less compact They would decrease transcription by making the chromatin more compact They would decrease transcription by making the chromatin less compact For this question, we will consider a eukaryotic mRNA that has four exons (E1, E2, E3, E4) and three introns (I1, I2, I3). What could occur if a protein were to bind over the 3' splice site of intron 2 (I2)? Group of answer choices The processed mRNA would consist of: E1+E2+E3+E4 The processed mRNA would consist only of: E1+E3 The processed mRNA would consist only of: E3+E4 The processed mRNA would consist of: E1+E2+E4arrow_forward
- Is heterochromatin transcriptionally active?arrow_forwardSince RNA polymerase has an error rate of 1 / 10^4 nucleotides, and the DNA polymerase has an error rate of 1 / 10^7 nucleotides, can cells tolerate errors made in transcription in comparison to errors made during DNA replication?arrow_forwardWhat is the role of chromatin modification in transcription?arrow_forward
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