Genetic Analysis: An Integrated Approach (3rd Edition)
3rd Edition
ISBN: 9780134605173
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Textbook Question
Chapter 14, Problem 22P
Given your knowledge of the genetic tools for studying Drosophila, outline a method by which you could clone the dunce and rutabaga genes identified by Seymour Benzer’s laboratory in the genetic screen described at the beginning of this chapter.
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Transcriptome analysis involves two separate methodologies: gene expression and RNA seq analyses. The 10 items below are a scrambled listing of the steps used in the two procedures. Identify the steps involved in RNA seq from the list below. Use the numbers in the list to refer to each step. Once the steps for RNA seq have been identified, write the steps in the order in which they are performed during the experiment.
(1) DNA sequencing
(2) Allow for hybridization and wash excess cRNA.
(3) Mix labeled cRNA with array chip.
(4) PCR amplification
(5) Measure fluorescence intensity to determine abundance of transcripts.
(6) Add labeled cRNA at each microarray location.
(7) Map cDNA sequences to the genome of the organism to determine identity and abundance of transcripts.
(8) mRNA isolation from cells
(9) Prepare fluorescently labeled cRNA probes
(10) cDNA synthesis
If you wanted to analyze the size and abundance of the HOAP protein in an extract from a Drosophila animal that you think may be mutant for the HOAP gene, what method could you use to target your analysis specifically to the HOAP protein in that extract?
From your knowledge about DNA microarray, answer the following:
A- How DNA microarray is created? and why it is referred to as “hybridization technology”?
B- Why RT-PCR is important in the sample preparation to perform expression microarray experiment?
C- Mention the name and the color of the dyes used in expression microarray?
D- If the expression microarray experiment was done with a normal sample and a suspected sample, after reading the color pattern resulted from the experiment it was recorded that “gene A22” is expressed in the suspected sample. The gene A22 is clinically linked to colon cancer. Answer the following: What is the expected color of the spot on the microarray which represents this gene? What is your interpretation of the suspected sample; is it a cancer sample or not and explain why?
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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