Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 23, Problem 7TYU
Summary Introduction
Introduction: Cladistics is an approach that finds the similarities in ancestral connection. The idea is that members of the same group share more features than members of other groups.
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1. Why is it important (or interesting) to find transitional fossils?
2. What are the different lines of evidence that point to a shared ancestry among ourselves and other vertebrates? Invertebrates?
3. What processes (evolutionary, developmental, other) result in the changes in animal
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EVOLUTION LINK Examine the cladogram in Figure 30-6a. Based on the discussion in this chapter, what were some of the types of data that biologists used to determine these phylogenetic relationships?
Give typing answer with explanation and conclusion to all parts
1. What are the wings of birds and bees are an example of?
1. a homologous character
2. convergent evolution
3. derived characters
4. mosaic evolution
5. ancestral characters
Chapter 23 Solutions
Biology (MindTap Course List)
Ch. 23.1 - State two justifications for the use of scientific...Ch. 23.1 - Describe the binomial system of naming organisms...Ch. 23.1 - Prob. 1CCh. 23.1 - What are the key features of the system of...Ch. 23.1 - Prob. 3CCh. 23.2 - Prob. 3LOCh. 23.2 - Prob. 4LOCh. 23.2 - Prob. 5LOCh. 23.2 - What are the major groups of organisms that belong...Ch. 23.2 - In what specific ways does a cladogram give us...
Ch. 23.2 - Prob. 3CCh. 23.3 - Critically review the difficulties encountered in...Ch. 23.3 - Apply the concept of shared derived characters to...Ch. 23.3 - Prob. 8LOCh. 23.3 - Contrast monophyletic, paraphyletic, and...Ch. 23.3 - How are shared ancestral characters and shared...Ch. 23.3 - Why dont shared ancestral characters provide...Ch. 23.3 - How is molecular biology contributing to the...Ch. 23.3 - Systematisms prefer to recognize monophyletic taxa...Ch. 23.4 - Contrast the traditional classification with the...Ch. 23.4 - Describe the construction of a cladogram by using...Ch. 23.4 - Prob. 12LOCh. 23.4 - In what way do systematists use shared derived...Ch. 23.4 - Prob. 2CCh. 23.4 - Prob. 3CCh. 23.5 - Describe how phylogenetic information applied to...Ch. 23.5 - Prob. 1CCh. 23 - Test Your Understanding Know and Comprehend 1. The...Ch. 23 - Prob. 2TYUCh. 23 - Test Your Understanding Know and Comprehend 3....Ch. 23 - Test Your Understanding Know and Comprehend 4. The...Ch. 23 - Prob. 5TYUCh. 23 - Prob. 6TYUCh. 23 - Prob. 7TYUCh. 23 - Prob. 8TYUCh. 23 - Test Your Understanding Apply and Analyze 9. In...Ch. 23 - Prob. 10TYUCh. 23 - Prob. 11TYUCh. 23 - Prob. 12TYUCh. 23 - Prob. 13TYUCh. 23 - Test Your Understanding Evaluate and Synthesize...Ch. 23 - Prob. 15TYU
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- Test Your Understanding Apply and Analyze 9. In interpreting a cladogram, (a) we can identify the specific ancestor of each taxon by tracing each branch back to the node closest to the root (b) taxa on the right side of a cladogram have evolved from the taxa on the left side (c) the relative placement of smaller branches allows us to determine the number of years since a particular taxon has evolved (d) we can determine relationships by tracing along the branches back to the most recent common ancestor (e) we must first identify horizontal gene transferarrow_forwardTest Your Understanding Know and Comprehend 3. Each branching point in a cladogram (a) is called a root (b) represents a clade (c) represents the divergence of two or more groups from a common ancestor (d) represents horizontal gene transfer (e) marks the divergence of two kingdomsarrow_forwardTest Your Understanding Know and Comprehend 4. The presence of homologous structures in two different groups of organisms suggests that (a) the organisms evolved from a common ancestor (b) convergent evolution has occurred (c) they belong to a polyphyletic group (d) homoplasy has occurred (e) independently acquired characters may evolve when organisms inhabit similar environmentsarrow_forward
- INTERPRET DATA Imagine that you discover a new animal in a rain forest. It has an elongated, segmented body with bristles, and it has no obvious head. Where would youplace this animal in the accompanying cladogram? Support your decision. Look at the more detailed cladogram inFigure 30-6a (in Chapter 30). What additional characteristicswould help you place your animal in this cladogram? Explainyour decision-making process.arrow_forwardDesign an Experiment Imagine that you are trying to determine the evolutionary relationships among six groups of animals that look very much alike because they have few measurable morphological characters. What data would you collect to reconstruct their phylogenetic history?arrow_forward1. Contrast homology and analogy. Give an example of homoplasy. 2. Discuss adaptation and preadaptation. 3. Compare and contrast divergent, convergent, parallel, and organic evolution. 4. What is a vestigial structure? A rudimentary structure? 5. Describe heterochrony – specifically paedogenesis, neoteny, and paedomorphosis.arrow_forward
- 1. Why is it important (or interesting) to find transitional fossils? 2. What are the different lines of evidence that point to a shared ancestry among ourselves and other vertebrates? Invertebrates? 3. What processes (evolutionary, developmental, other) result in the changes in animal type the answerarrow_forward4) What makes Archeopteryx an important fossil evolutionarily? A)This species has a mix of characters that suggest it was a "transitional" species between two large groups, dinosaurs and birds. B)This species is the oldest known, universally agreed upon, fossil of life, and therefore tells up what the common ancestor to all living things might have been like. C)This species has a mix of characters that suggests is was a "transitional" species between two large groups, fish and amphibians. D)This species is thought to be the last common ancestor between chimps and humans, and therefore is the root of our own specific group (homonins).arrow_forwardWHAT IF? Suppose a molecular clock dates the divergence of two taxa at 80 million years ago, but new fossilevidence shows that the taxa diverged at least 120 millionyears ago. Explain how this could happen.arrow_forward
- 1. Differenciate the difference between taxonomy and systematics and give a brief examplanation about their relations. 2. Give certain primitive characters with all members of kingdom Animalia (adapted from Krempel's and Lee, p.7-9). List four primitive characters all humans share with all other animal, but not with any other living things. 3. List as many derived characters as possible that make Homo Sapiens different from all other great apes. Restrict your list to truly BIOLOGICAL characters.arrow_forward(e) Using your phylogenetics knowledge from the first exam material , how was the approximate time of divergence between bees and their sister taxa estimated ?arrow_forward1. Based on the activity what is the basis for saying that a certain organisms is less or more similar to another organism. 2. In the introduction it says "molecular data is universal", what is meant by this and why is it important in the science of systematics? 3. Figure 2 shows the phylogenetic relationship among chordates. Based on the figure, how does the ancestor of all chordates look like? 4. Based on figure 2 which organisms is most similar to Tunicates and least similar to tunicates?arrow_forward
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