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 17P
How would you perform a genetic screen to identify genes directing Drosophila wing development? Once you have a collection of wing
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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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- By whole-exome sequencing, you have identified an early termination mutation in KLHL4 in a human patient with an undiagnosed blood vessel anomaly. There is almost nothing known about the function of this gene, and no existing animal models! To begin to understand its function, you decide to use the zebrafish model. You first want to know where in the embryo this gene is expressed. Which technique would you use to identify the cell type that expresses klhl4 mRNA in zebrafish embryos? You find that this gene is expressed in endothelial cells, which line blood vessels. Intrigued by this finding, you next decide to disrupt the gene in zebrafish using CRISPR/Cas9. The DNA sequence that you want to target is below. What is the sequence of your 20-base guide RNA? 5’ TAGCAATTATGCGCGCTAGCAATTGCGTAGGTCATAATGCAGCTGAC 3’ 3’ ATCGTTAATACGCGCGATCGTTAACGCATCCAGTATTACGTCGACTG 5’ After injecting the gRNA with Cas9, what are potential outcomes? Enter true or false.…arrow_forwardGeneticists often use ethylmethane sulfonate (EMS) to induce mutations in Drosophila. Why is EMS a mutagen of choice for genetic research? What would be the effects of EMS in a strain of Drosophila lacking functional mismatch repair systems?arrow_forwardDescribe how you would use replica plating of mutagenized, haploid yeast cells to identify temperature-sensitive (ts) mutations in essential genes needed for yeast growth and survival.arrow_forward
- How would you devise a screen to identify recessive mutations in Drosophila that result in embryo lethality? How would you propagate the recessive mutant alleles?arrow_forwardYou want to clone a eukaryotic gene and express the corresponding protein in yeast. However, the protein typically localizes within mitochondria. How will you perform your gene cloning so that the protein is secreted from the cell, rather than localized within yeast mitochondria?arrow_forwardSuppose that you have just graduated from college and have started working at a biotechnology firm. Your first job assignment is to clone the pig gene for the hormone prolactin. Assume that the pig gene for prolactin has not yet been isolated, sequenced, or mapped; however, the mouse gene for prolactin has been cloned, and the amino acid sequence of mouse prolactin is known. Briefly explain two different strategies that you might use to find and clone the pig gene for prolactin.arrow_forward
- Next-generation sequencing reveals that six new mutations have occurred in the coding regions of genes in an individual diploid fly. If the coding regions of this fly comprise 100 million nucleotides per haploid genome, what is the mutation rate per nucleotide?arrow_forwardWhat are site-recombinases? Describe in detail how cre- recombinase can be used to decipher the roles of specific genes and proteins in complex multicellular organisms? Explain how the cre-lox system can be used to examine the role of a particular gene in a specific type of tissue?arrow_forwardAs an alternative to random mutagenesis, scientistscan screen for mutant phenotypes by knocking downindividual gene functions systematically using RNAi.a. Suggest ways to construct transgenes that in flieswould express RNAi to knock down a gene.b. How could you perform a mutant screen for fly genesrequired for wing development using RNAi? Howcould this screen avoid the problem of pleiotropy?arrow_forward
- Expression of recombinant proteins in yeast is an important tool for biotechnology companies that produce new drugs for human use. In an attempt to get a new gene X expressed in yeast, a researcher has integrated gene X into the yeast genome near a telomere. Will this strategy result in good expression of gene X? Why or why not? please try to explain a bit elaborately.arrow_forwardThere is a hypothetical gene related to the nervous system of Drosophila. Describe all the methods, steps, and key substances you need to obtain to use the following techniques in experimental design to study the gene: - In situ hybridization (to find the mRNA) - Immunohistochemistry (to find the protein) - CRISPR-Cas9 (for loss of function) - Expression vector (for gain of function)arrow_forwardWhat is a fusion protein? How are fusion proteins involved in cloning and expression?arrow_forward
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