Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780134433769
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman
Publisher: PEARSON
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Textbook Question
Chapter 20.4, Problem 2CC
MAKE CONNECTIONS Review Concept 14.5. Then explainExplain how numerous base changes could occur in an organism’s DNA yet have no effect on its survival and reproduction.
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Which characteristics would you expect to be indicativeof horizontal gene transfer?T / F A significant change in %GC in part of the genome of an organismT / F Deletions of gene in the genomeT / F An insertion of a stretch of DNA when aligning sequences from closely related speciesT / F Missing genomic DNA sequences when aligning sequences from closely related speciesT / F Duplications of genes in parts of the genome
MAKE CONNECTIONS In changing from an “RNA world”to today’s “DNA world,” genetic information must haveflowed from RNA to DNA. After reviewing Figures 17.4and 19.9, suggest how this could have occurred. Does sucha flow occur today?
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Chapter 20 Solutions
Campbell Biology in Focus, Books a la Carte Edition; Modified Mastering Biology with Pearson eText - ValuePack Access Card - for Campbell Biology in Focus (2nd Edition)
Ch. 20.1 - Which levels of the classification in Figure 20.3...Ch. 20.1 - Which of the trees shown here depicts an...Ch. 20.1 - Prob. 3CCCh. 20.2 - Decide whether each of the following pairs of...Ch. 20.2 - WHAT IF? Suppose that two species, A and B, have...Ch. 20.3 - Prob. 1CCCh. 20.3 - The most parsimonious tree of evolutionary...Ch. 20.3 - WHAT IF? Draw a phylogenetic tree that includes...Ch. 20.4 - What is a molecular clock? What assumption...Ch. 20.4 - MAKE CONNECTIONS Review Concept 14.5. Then...
Ch. 20.4 - WHAT IF? Suppose a molecular clock dates the...Ch. 20.5 - Why is the kingdom Monera no longer considered a...Ch. 20.5 - Prob. 2CCCh. 20.5 - Prob. 3CCCh. 20 - In a comparison of birds and mammals, the...Ch. 20 - To apply parsimony to constructing a phylogenetic...Ch. 20 - Prob. 4TYUCh. 20 - Prob. 5TYUCh. 20 - If you were using cladistics to build a...Ch. 20 - Prob. 7TYUCh. 20 - SCIENTIFIC INQUIRY DRAW IT (a) Draw a phylogenetic...Ch. 20 - FOCUS ON EVOLUTION Darwin suggested looking at a...Ch. 20 - Prob. 10TYUCh. 20 - SYNTHESIZE YOUR KNOWLEDGE This West Indian manatee...
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- Write 3 discussion questions about DNA Barcoding and Woolly mammoth diet mystery solved by DNA analysis?arrow_forwardMAKE CONNECTIONS In Concept 20.2, you learnedabout genome-wide association studies. Explain howthese studies use the systems biology approach.arrow_forwardMAKE CONNECTIONS Mutagens are chemical andphysical agents that induce mutations in DNA (seeConcept 17.5). How does reduced ozone concentrationin the atmosphere increase the likelihood of mutationsin various organisms?arrow_forward
- 27. Which term describes any ancient remains, impressions, or traces of an organism or traces of its activity that have been preserved in rocks or other mineral deposits in Earth's crust? a. analogous feature b. homologous feature c. mutation d. fossiarrow_forwardQ1: Summarize how DNA repair works and why the repair mechanisms are essential for the normal function of cells and whole organisms. Q2: Is DNA repair 100 percent effective? Q3: What would happen to an organism if its DNA repair became less effective?arrow_forward1-Differentiate between DNA footprinting and Fingerprint with examples. 2-Explain the importance of mapping of genes on chromosomesarrow_forward
- These highly polymorphic molecular markers are useful in DNA fingerprinting: (a) plasmid vectors (b) cloned DNA sequences (c) palindromic DNA sequences (d) short tandem repeats (e) complementary DNAsarrow_forwardGive answer to all parts? 1. Why is the elimination of DNA or protein is important in RNA isolation? 2. Why is the integrity of isolated RNA an important aspect of RNA isolation?arrow_forward1. Describe the pattern of base pair matching for the two strands in the plant's DNA. In other words, which types of bases are paired together? Does the DNA from the mammal follow the same base-pairing rule as the DNA from the plant? Is base-pairing the same or different in the DNA of the bacterium? 2. Which characteristics are similar in the DNA of plants, mammals, and bacteria? What is the only characteristic that differs between these segments of DNA from a plant, a mammal and a bacterium?arrow_forward
- EVOLUTION LINK DNA technology, such as the production of transgenic animals, is possible only because widely different organisms have essentially identical genetic systems (DNA RNA protein). What is the evolutionary significance of the universality of genetic systems in organisms as diverse as bacteria and pigs?arrow_forward4.1. Recombinant DNA technology has had a dramatic impact on all aspects of molecular biology, allowing scientist to routinely study cells and their macromolecules in ways that were unimaginable. Describe manipulations central to this technology. (10) 4.2. Draw a diagram to illustrate a technique for creating clones of a particular DNA (DNA cloning).arrow_forwardWHAT IF? Would you expect the plastid DNA of photosynthetic dinoflagellates, diatoms, and golden algaeto be more similar to the nuclear DNA of plants (domainEukarya) or to the chromosomal DNA of cyanobacteria(domain Bacteria)? Explain.arrow_forward
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