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 14, Problem 6P
You have cloned the mouse ortholog (see Genetic analysis
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MRNA transcripts can be collected from cells, made to glow with a fluorescent dye, and added to a microarray chip
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After washing the chip, you then collect MRNAS from liver cells and add them to the same chip, which of the gene expression
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O A
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Which mechanisms for regulating gene expression may be applied for the treatment of such diseases? Propose a method of treatment. Explain how it might work.
Reference: https://link.springer.com/article/10.1186/ar3317
Protein levels and mRNA levels for a particualr gene don’t always match. For example, the GCN4 gene in yeast is always producing mRNA, but the Gcn4 protein is only made when the cells are starved.
A. what is one mechanism by which changes in mRNA levels are not always matched by changes in the protein product of that mRNA?
Chapter 14 Solutions
Genetic Analysis: An Integrated Approach (3rd Edition)
Ch. 14 - 14.1 What are the advantages and disadvantages of...Ch. 14 - Prob. 2PCh. 14 - Discuss the similarities and differences between...Ch. 14 - 14.5 What are the advantages and disadvantages of...Ch. 14 - 14.6 You have cloned the mouse ortholog (see...Ch. 14 - 14.7 Diagram the mechanism by which CRISPRCas...Ch. 14 - 14.8 Describe how CRISPRCas has been modified to...Ch. 14 - 14.9 Discuss the advantages (and possible...Ch. 14 - 14.10 Discuss the advantages (and possible...Ch. 14 - You have identifies a gene encoding the protein...
Ch. 14 - You have identified a recessive mutation that...Ch. 14 - 14.13 The CBF genes of Arabidopsis are induced by...Ch. 14 - 14.14 When the S. cerevisiae genome was sequenced,...Ch. 14 - 14.15 Translational fusions between a protein of...Ch. 14 - 14.16 In humans, Duchenne’s muscular dystrophy is...Ch. 14 - 14.17 How would you perform a genetic screen to...Ch. 14 - In enhancer trapping experiments, a minimal...Ch. 14 - 14.19 In Genetic Analysis, we designed a screen to...Ch. 14 - How would you design a genetic screen to find...Ch. 14 - 14.21 The eyes of Drosophila develop from imaginal...Ch. 14 - 14.22 Given your knowledge of the genetic tools...Ch. 14 - Mutations in the CFTR gene result in cystic...Ch. 14 - 14.24 How would you clone a gene that you have...Ch. 14 - 14.25 How would you conduct a screen to identify...Ch. 14 - In land plants, there is an alternation of...Ch. 14 - 14.27 The Drosophila evenskipped (eve) gene is...Ch. 14 - Prob. 28PCh. 14 - 14.29 As shown in Figure, mutations in the...Ch. 14 - How would you edit a specific nucleotide in a...Ch. 14 - Through a forward genetics screen in Arabidopsis...Ch. 14 - The CRISPR - Cas 9 complex directs the Cas 9...Ch. 14 - 14.33 Describe how enhancer screens can be used to...Ch. 14 - How might you use CRISPR - Cas 9 to create a large...
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- 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_forwardThis question is regarding the 6 areas that can be involved in the control of gene expression: Part 1 - Using the image below, indicate where the six major control points for eukaryotic gene expression are on the figure (Letters A - F). Part 2 - Please give a brief description of what is occurring at each point or the specific molecule(s) for letters A- F. 1. Control Point A 2. Description of A 3. Control Point B 4. Description of B 5. Control Point C 6. Description of C 7. Control Point D 8. Description of D 9. Control Point E 10. Description of E 11. Control Point F 12. Description of Farrow_forwardA strain of Arabidopsis thaliana possesses a mutation in the APETALA2 gene. As a result of this mutation, much of the 3′ UTR of the mRNA transcribed from the gene is deleted. What is the most likely effect of this mutation on the expression of the APETALA2 gene?arrow_forward
- The sequencing of entire genomes has made it possible to examine the level of gene expression in a particular cell or tissue by using oligonucleotide probes to assess the mRNA expression level from a particular gene. This is done most effectively through the use of what experimental technique?arrow_forwardThe transcription factor Pax6 is required continually during the life of a mouse (or a human) for the development of the retina. Homozygous Pax6 knockout mice die soon after birth because Pax6 protein is also required in essential organs, such as the pancreas. a) In order to study the role of Pax6 in eye development a researcher wants to generate a mouse that expresses Pax6 everywhere except in its eyes. Describe how you could construct such a mouse by floxing the gene. Is it possible to achieve the same end with a transgene? (Hint: think about using cDNA and RNAI) b) Suppose you want to create a mouse similar to that in part (a), but one where the eye cells from Pax6 function has been removed and now express a gene that specifies a green fluorescent protein (GFP). Marking the cells in this way will allow the investigators to see the shapes of the Pax6- eye cells more easily than if they did not express GFP. Diagram a Pax6 gene construct that would enable the researcher to do this…arrow_forwardThe chromosomal sequences of two mutant alleles of gene A from patients with the zero subtype include the following mutation: 496G>A. Briefly discuss why this mutant fails to produce a functional protein. Note that none of the mRNA transcribed from this gene is of the expected size; some of the mRNA molecules produced are 223 nucleotides shorter than expected whilst others are 47 nucleotides longer than expected. The mutation on position 496 is highlighted in yellow, this will become A instead of G. However, it is the start of an intron, therefore the mutation won't affect the protein. but the question implies that the mutation will affect the protein.arrow_forward
- You are interested in finding out in which organ GTF2H5 is highly expressed experimentally. Describe a method in recombinant DNA technology to measure gene expression, explain your rationale, and step by step, what are needed for this method to workarrow_forward. Let’s say that you have incredible skill and can isolate the white and red patches of tissue from the Drosophila eyes shown in Figure 12-24 in order to isolate mRNA from each tissue preparation. Using your knowledge of DNA techniques from Chapter 10, design an experiment that would allow you to determine whether RNA is transcribed from the white gene in the red tissue or the whitetissue or both. If you need it, you have access to radioactive white-gene DNAarrow_forwardProgesterone is a steroid hormone (also described as a ligand) that prepares the body for pregnancy. It binds to the progesterone receptor (PR) protein in the cytoplasm of various cells. Ligand bound PR acts as a transcriptional activator, binds to the DNA in the promoter region of several genes and leads to transcriptional activation of these genes. Ligand bound PR has been shown to increase the expression of a gene, FKBP5. You are studying the activity of wild-type (WT) and mutant PR in cells by examining expression of FKBP5. Results are obtained as shown in the figure below, where the asterisk indicates when progesterone was (or was not) added to the cells. From the results, which of the following statements can be concluded? WT PR without progesterone WT PR with progesterone Time Time mutant PR without progesterone mutant PR with progesterone Time Time The wild-type PR is unable to increase FKBP5 expression in the absence of ligand The wild-type PR increases FKBP5 expression after…arrow_forward
- Progesterone is a steroid hormone (also described as a ligand) that prepares the body for pregnancy. It binds to the progesterone receptor (PR) protein in the cytoplasm of various cells. Ligand bound PR acts as a transcriptional activator, binds to the DNA in the promoter region of several genes and leads to transcriptional activation of these genes. Which of the following statements must be true for the PR protein? O Ligand binding to the PR results in a conformational change in the primary structure of the protein The domain/region of the PR protein that interacts with the DNA, has basic amino acids Ligand binding to the PR results in a conformational change in the tertiary structure of the protein The domain/region of the PR protein that interacts with the DNA, has acidic amino acidsarrow_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 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 expressionarrow_forwardDystrophin is a protein that forms part of a vital protein complex that connects the cytoskeleton of a muscle fiber cell to the extracellular matrix. This connection strengthens and shapes the muscle fibers. Dystrophin is coded by the DMD gene. This is one of the longest human genes known, covering 2,300,000 base pairs (0.08% of the human genome) It is located in chromosome 21. The immature mRNA is 2,100,000 bases long and takes 16 hours to transcribe. It contains 79 exons. The mature mRNA measures 14,000 and codes for a protein with 3,685 amino acids. Abnormal expression of dystrophin leads to severe symptoms like muscle weakness and fatigability, a disease that is called muscular dystrophy. Most patients with muscular dystrophy become wheelchair dependent early in life. Cardiac muscle is also affected which results typically in premature death (~ second or third decade of life). Several mutations in this gene have led to the production of low levels of dystrophin or of a defective,…arrow_forward
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QCE Biology: Introduction to Gene Expression; Author: Atomi;https://www.youtube.com/watch?v=a7hydUtCIJk;License: Standard YouTube License, CC-BY