Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 21.4, Problem 1CC
Discuss the characteristics of mammalian genomes that make them larger than prokaryotic genomes.
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Illustrate about the Map and sequence the genomes of several model organisms used in experimental genetics, including Escherichia coli, Saccharomyces cerevisiae, Caenorhabditis elegans, Drosophila melanogaster, and Mus musculus (mouse).
Genome duplication in the animal lineage leading to chordates has produced the largest genome sizes in which of the following vertebrate groups?
the cephalochordates (like the lancelet)
the chondrichthyes (like the shark)
the agnathan fishes (like the hagfish)
the teleost fishes (like the trout)
the urochordates (like the sea squirt)
List at least three features of eukaryotic genomes thatare not found in bacterial genomes
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
- Describe two main reasons why the proteomes of eukaryotes are usuallymuch larger than their genomes.arrow_forwardDetermine which of the genomic traits are associated with prokaryotes or eukaryotes. These traits include relative genome size. number of genes, gene density, and number of exons. Prokaryote about one gene every 2000 to 100000 bp relatively large, variable size genome multiple introns Answer Bank relatively small genome about one gene every 1000 bp 500 to 7000 genes Eukaryote 6000 to 30000 genes few, if any, intronsarrow_forwardList at least three features of eukaryotic genomes that are not found in bacterial genome.arrow_forward
- The genome of Daphnia pulex, a small freshwater crustacean, includesapproximately 30,000 genes in ∼200,000 kb of DNA. How does the genome compare to that of Drosophila melanogaster, another arthropod, and to that of humans?arrow_forwardWhy do humans have such a large number of nucleotides (3.2 billion base pairs) compared to the number of nucleotides in the Japanese pufferfish (with only 400 million base pairs)? the difference is due primarily to a relative abundance of intron nucleotides in humans the difference is due primarily to a relative abundance of euchromatin sequences in humans the difference is due primarily to a relative abundance of intron sequences in humans the difference is due primarily to a relative abundance of protein-coding genes in humans the difference is due primarily to a relative abundance of exon sequences in humansarrow_forwardDescribe the human genome in terms of genome size, the percentageof the genome that codes for proteins, how much is composedof repetitive sequences, and how many genes it contains.Describe two other features of the human genome.arrow_forward
- In 1995, the first free-living organism to have its genome completely sequenced was Haemophilus influenzae, a bacteria. In the following year, the baker’s yeast Saccharomyces cerevisiae was the first eukaryote genome sequence to be fully sequenced. The complete sequencing of the human genome and related organisms represent one of the greatest scientific achievements in the history of mankind.Elaborate on the importance of genome studies in general.arrow_forwardA major difference between prokaryotes and eukaryotes is the presence of a nucleus. What advantages and disadvantages may occur with having a cell’s genome packaged in a nucleus?arrow_forwardGenetic analysis of Mycobacterium leprae, the bacterium that causes leprosy, reveals that its genome has undergone decay over time, losing DNA and acquiring mutations that make some of its genes nonfunctional. What might be some potential reasons for this evolutionary decay of its genome?arrow_forward
- You are interested in finding out the function of a particular gene in the mouse genome. You have determined the nucleotide sequence of the gene, defined the portion that codes for its protein product, and searched the relevant database for similar sequences; however, neither the gene nor the encoded protein resembles anything previously described. What types of additional information about the gene and the encoded protein would you like to know in order to narrow down its function, and why?arrow_forwardThe figure below shows the introns and exons found in gene X. The size of each exon and intron is shown as well. A study on this organism found that two mature mRNA molecules are produced for this gene. One is 867 nucleotides in length, and the other is 685 nucleotides in length. Name the process responsible for producing this variation. Also explain how these 867 and 685 nucleotide fragments were produced by referring to the information provided. Hint: This organism produces a poly-A tail of 150 nucleotides.arrow_forwardThe figure below shows the introns and exons found in gene X. The size of each exon and intron is shown as well. A study on this organism found that two mature MRNA molecules are produced for this gene. One is 457 nucleotides in length, and the other is 439 nucleotides in length. Name the process responsible for producing this variation. Also explain how these 457 and 439 nucleotide fragments were produced by referring to the information provided. Hint: This organism produces a poly-A tail of 120 nucleotides. 99 62 120 84 102 27 117 Gene X E1 в в 11 E2 12 E4 Exon (E) Intron (1)arrow_forward
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