Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
12th Edition
ISBN: 9780134811390
Author: William S. Klug, Michael R. Cummings, Charlotte A. Spencer, Michael A. Palladino, Darrell Killian
Publisher: PEARSON
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Chapter 18, Problem 4PDQ
Consider the CT/CGRP example of alternative splicing shown in Figure 18.3. Which different types of alternative splicing patterns are represented?
FIGURE 18.3 Alternative splicing of the CT/JCGRP gene transcript. The primary transcript, which is shown in the middle of the diagram, can be spliced into two different mRNAs, both containing the first three exons but differing in their final exons.
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A eukaryotic protein-encoding gene contains two introns and three exons: exon 1–intron 1–exon 2–intron 2–exon 3. The 5′ splice site at the boundary between exon 2 and intron 2 has been eliminated by a small deletion in the gene. Describe how the pre-mRNA encoded by this mutant gene will be spliced. Indicate which introns and exons will be found in the mRNA after splicing occurs.
"The gene for Receptor Z contains an unknown number of untranslated first exons that are spliced to a common exon 2" - what does it mean if a "first exon" is "spliced to a common exon 2"? Does it mean that Exon 1 is attached to Exon 2, but Exon 1 is not part of the translated protein - similar to the below schematic?
mRNA Option 1: [Exon 1a][Exon 2][Exon 3]....
mRNA Option 2:[Exon1b][Exon2][Exon 3]
mRNA Option 3: [Exon1c][Exon2][Exon 3]
Given the following mRNA transcript:
5’-UUUGGCAUGGGUAUCGUAGAGAUGGAAUUCAUAGUGGAGUAA-3’
What is the one-letter abbreviation of the protein product of the mRNA transcript?
Chapter 18 Solutions
Concepts of Genetics Plus Mastering Genetics with Pearson eText -- Access Card Package (12th Edition) (What's New in Genetics)
Ch. 18 - Some mutations in the tra gene of Drosophila cause...Ch. 18 - Some scientists use the analogy that the...Ch. 18 - Consider the example that actin mRNA localization...Ch. 18 - What is alternative splicing, where does it occur,...Ch. 18 - What role might the expanded tri- and...Ch. 18 - DM1 is characterized by a phenomenon known as...Ch. 18 - HOW DO WE KNOW? In this chapter, we focused on how...Ch. 18 - CONCEPT QUESTION Review the Chapter Concepts list...Ch. 18 - List three types of alternative splicing patterns...Ch. 18 - Consider the CT/CGRP example of alternative...
Ch. 18 - Explain how the use of alternative promoters and...Ch. 18 - Explain how a tissue-specific RNA-binding protein...Ch. 18 - The regulation of mRNA decay relies heavily upon...Ch. 18 - Nonsense-mediated decay is an mRNA surveillance...Ch. 18 - AU-rich elements (AREs) are cis-elements in mRNAs...Ch. 18 - What are processing bodies (P bodies), and what...Ch. 18 - In 1998, future Nobel laureates Andrew Fire and...Ch. 18 - Present an overview of RNA interference (RNAi)....Ch. 18 - RNAi may be directed by small interfering RNAs...Ch. 18 - Prob. 14PDQCh. 18 - In principle, RNAi may be used to fight viral...Ch. 18 - Prob. 16PDQCh. 18 - Prob. 17PDQCh. 18 - Prob. 18PDQCh. 18 - Prob. 19PDQCh. 18 - How is it possible that a given mRNA in a cell is...Ch. 18 - Prob. 21PDQCh. 18 - Prob. 22PDQCh. 18 - Prob. 23PDQCh. 18 - Prob. 24ESPCh. 18 - Prob. 25ESPCh. 18 - Mutations in the low-density lipoprotein receptor...Ch. 18 - RNA helicases are a class of proteins that bind...Ch. 18 - While miRNA response elements (MREs) may be...Ch. 18 - RNAi is currently being tested as a therapeutic...Ch. 18 - The localization and translational control of...Ch. 18 - Explain how the expression of a single gene can be...
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- The asterisk (*) in the diagram below indicates a single base mutation in the 5' splice site of the second intron of a eukaryotic gene. Due to this mutation, the second intron is now not ‘spliced out’ during the splicing process. What are the most likely consequences of this mutation with respect to the size of the pre-mRNA and the size of the mature mRNA? a. The pre-mRNA will be longer and the mature mRNA will be longer. b. The pre-mRNA will be longer and the size of the mature mRNA will not be affected c. The size of the pre-mRNA will not be affected and the mature mRNA will be longer d. The size of the pre-mRNA will not be affected and the size of the mature mRNA will not be affectedarrow_forwardIn eukaryotes there is not a consistent relationship between the length of the coding sequence of a gene and the length of the mature mRNA it encodes, even though one nucleotide in DNA = one nucleotide in pre-mRNA or primary transcript. Explain why this is so.arrow_forwardThere is a situation in which a gene has five exons. Please draw four possible mature products of the gene if there is alternative splicing.arrow_forward
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