Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 21, Problem 21.6CR
What type of Information can be obtained by comparing the genomes of closely related species? Of very distantly related species?
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The genome relatedness of different organisms can be shown with a phylogenetic tree constructed based on DNA sequence.
(1) Why DNA sequences could be used to deduce genome relationship?
(2) What else may be used to suggest the relatedness of different genomes?
Compare genome size, gene number, and gene density (a) in the threedomains and (b) among eukaryotes.
Explain how the different “-omics” involved with the three major parts of the central dogma can be used to study this new species. What are molecular techniques/tools (sequencers) that can be used to study each of these? How would you sequence the genome efficiently (i.e., lowest amount of time and money)?
Chapter 21 Solutions
Campbell Biology
Ch. 21.1 - Describe the whole-genome shotgun approach.Ch. 21.2 - Prob. 1CCCh. 21.2 - Explain the advantage of the systems biology...Ch. 21.2 - Prob. 3CCCh. 21.2 - MAKE CONNECTIONS In Concept 20.2, you learned...Ch. 21.3 - The best estimate is that the human genome...Ch. 21.3 - The Genomes Online Database (GOLD) Website of the...Ch. 21.3 - WHAT IF? What evolutionary processes might...Ch. 21.4 - Discuss the characteristics of mammalian genomes...Ch. 21.4 - VISUAL SKILLS Which of the three mechanisms...
Ch. 21.4 - Contrast the organizations of the rRNA gene family...Ch. 21.4 - MAKE CONNECTIONS Assign each DNA segment at the...Ch. 21.5 - Describe three examples of errors in cellular...Ch. 21.5 - Explain how multiple exons might have arisen in...Ch. 21.5 - What are three ways that transposable elements are...Ch. 21.5 - WHAT IF? In 2005, Icelandic scientists reported...Ch. 21.6 - Prob. 1CCCh. 21.6 - Prob. 2CCCh. 21.6 - Prob. 3CCCh. 21 - How did the Human Genome Project result in more...Ch. 21 - What has been the most significant finding of the...Ch. 21 - Compare genome size, gene number, and gene density...Ch. 21 - Explain how the function of transposable elements...Ch. 21 - How could chromosomal rearrangements lead to the...Ch. 21 - What type of Information can be obtained by...Ch. 21 - Bioinformatics intludes all of the following...Ch. 21 - Homeotic genes (A) encode transcription factors...Ch. 21 - Prob. 3TYUCh. 21 - DRAW IT Below are the amino acid sequences(using...Ch. 21 - EVOLUTION CONNECTION Genes important in the...Ch. 21 - scientific inquiry The scientists mapping the SNPs...Ch. 21 - Prob. 7TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE Insects have three...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How are DNA sequences obtained for phylogenetic analysis?arrow_forwardWhat is the difference between the core genome and pan-genome? What might you infer if you compare two genera, one in which the size of the core genome and pan-genome are very similar, and one in which the core genome is much smaller than the pan-genome?arrow_forwardHow do comparisons between genomes of related species help redefine gene annotation?arrow_forward
- The following two sequences represent the same gene from two different species: Assume that all changes in the third position are synonymous and all in the first and second positions are nonsynonymous. a) How many synonymous sites (positions) are there in the gene? b) How many nonsynonymous sites (positions) are there in the gene? c) How many synonymous substitutions are there between species? d) How many nonsynonymous substitutions are there between species? e) What is the dN/dS ratio? f) What does the dN/dS ratio tell you about the evolution of this sequence? Finally, It has been hypothesized that population size affects genome size. What is the proposed relationship? How can it be explained?arrow_forwardWould a protein encoded on the core genome or one encoded only on the pan-genome be best to use in constructing a phylogenetic tree? Explain your answerarrow_forwardWhat is the main goal of comparative genome hybridization?Explain how the ratio of green to red fluorescence provides informationabout chromosome structure?arrow_forward
- Imagine you are studying two eukaryotic species. The genome of Species A is 100 Mb in size. The genome of Species B is 500 Mb in size. Based only on this information, which of the following statements are accurate? Species B is a more complex organism than Species A. None of the other statements can be made based solely on the information in the question. Species B has more genes than Species A. Species B has more chromosomes, more genes, and is more complex than Species A. Species B has more chromosomes than Species A.arrow_forwardWhat is the relationship between genome size and gene number in different organisms?arrow_forwardWhat is a universal code? Are there any exceptions for universal code? please define the terminology by giving examples from different organisms.arrow_forward
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