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 22P
The majority of this chapter focused on gene regulation at the transcriptional level, but the quantity of functional protein product in a cell can be regulated in many other ways as well (see Figure
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You are teaching a class on the regulation of eukaryotic gene expression. In order to demonstrate this complex process, you decide to draw for the class a typical eukaryotic gene/transcription unit with its major regions, such as the promoter regions, where the RNA polymerase II and transcription factors would bind
From the list given - choose all components that you think are part of a typical eukaryotic gene
From the list given - choose all the regulatory sequences that you think would control the expression of this eukaryotic gene
From the list given - choose all of the regulatory proteins that would bind the eukaryotic gene to control its expression
What are the functions of transcriptional activator proteins and repressor proteins? Explain how they work at the molecular level.
name TWO mechanisms of control of gene expression that are only used by eukaryotes and discuss why each of those mechanisms wouldn’t be possible in prokaryotes.
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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- List some of the ways in which eukaryotic transcription is more complex than transcription in bacteria. Propose some possible reasons for the greater complexity of transcription in eukaryotic cells.arrow_forwardCompare the control of gene regulation in eukaryotes and bacteria at the level of initiation of transcription. How do the regulatory mechanisms work? What are the similarities and differences in these two types of organisms in terms of the specific components of the regulatory mechanisms?arrow_forwarda. How do bacteria increase the efficiency of gene expression? Is this possible in eukaryotes? b. A mutation in the promoter of Gene K disrupts an enzyme binding site and results in the loss of Gene K expression. Is this change in gene expression likely happening at the transcriptional or the translational level? Explain. c. Propose three different mutations to prevent initiation, elongation, and termination of bacterial transcription, respectively. Explain how/why each mutation would prevent its respective step. (Hint: mutations can be in genes that encode proteins or regulatory DNA sequences)arrow_forward
- Debes et al recently described how aging in humans, mice, nematodes, and other eukaryotes is associated with an increase in the average speed of transcriptional elongation by RNA polymerase II. Overexpression of some proteins that decreased PolII elongation speed extended lifespan in the fly Drosophila. For each of the following proteins, predict whether overexpression of that protein (assuming all other cellular components are normal) would likely reduce transcriptional speed, and briefly justify your answer. a) Mediator proteinsb) Histone proteinsc) Insulator binding proteinsarrow_forwardYou are teaching a class on the regulation of eukaryotic gene expression. In order to demonstrate this complex process, you decide to draw for the class a typical eukaryotic gene/transcription unit with its major regions, such as the promoter regions, where the RNA polymerase II and transcription factors would bind etc…. I need the correct answer please From the list given - choose all components that you think are part of a typical eukaryotic genearrow_forward"Upstream" "Downstream" Exons Start of transcription Termination codon 5 3' Promoter initiator codon Introns Polyadenylation signal (intervening sequences) 5' untranslated region 3' untranslated region Direction of transcription Please study the diagram above on eukaryotic gene expression. In order to provide instructions for gene expression, a eukaryotic gene should have the following sequences except for O A. Promoter B. Start codon also known as initiator codon C. Splicing signals (dinucleotide sequence in the intron) O D. 5' CAP sequencearrow_forward
- There are similarities and differences during regulation of gene expression in both prokaryotes and eukaryotes. Promoters, transcription factors and RNA polymerase are essential elements in transcription but their properties and function may differ.a) Predict the outcome or consequences of mRNA transcription by RNA polymerase II in eukaryote without the presence of transcription factors (TF).arrow_forwardTranscriptional regulators are proteins that bind to promoters (the 5-flanking regions of genes) to regulate their transcription. Assume that a particular transcription regulator normally promotes transcription of gene X, a transport protein. If a mutation makes this regulator gene nonfunctional, would the resulting phenotype be similar to a mutation in gene X itself? Why or why not?arrow_forwardIS. Alternative splicing has been estimated to occur in more than 95% of multi-exon genes. Which of the following is not an evolutionary advantage of alternative splicing? Alternative splicing increases diversity without increasing genome size Different gene isoforms can be expressed in different tissues Alternative splicing creates shorter mRNA transcripts Different gene isoforms can be expressed during different stages of development.arrow_forward
- Examine Figure 17.7. What would be the effect on transcription if a mutation occurred in the gene that encodes GAL3, so that no functional GAL3 was produced?arrow_forwardThe chart below is a position specific scoring matrix (PSSM, a logarithmic transformed matrix) for a transcription factor binding site. (1). Evaluate a sequence “GACATTCA” to find out which segment of the sequence fits the binding site best. (2) What is the max score that a sequence can have with this PSSM? (3) What is the minimum score a sequence can have with this PSSM?arrow_forwardGiven the following schematic for a gene and its associated regulatory regions, answer the following questions by placing the correct letter in the provided blanks please put in the correct letter for the questions What region would provide cell type-specific expression of genes? region What site would significantly increase gene expression rates? = region What region or regions of this gene’s coding sequence are expressed as amino acids = regionarrow_forward
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