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 8TYU
Summary Introduction
Introduction: Systematics is used to construct a cladogram, which is an evolutionary tree, which depicts the relationship among different species by studying the similarities or differences.
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1. Go online. Choose a group of organisms you are interested to work with (e.g. invertebrates);
2. In tabular form, list all the characters. Evaluate the characters (whether primitive or derived).
3. Remember that in building your cladogram, use only shared derived characters.
4. Construct your own cladogram.
In cladistic analysis, (a) ancestral characters are used to reconstructphylogenies (b) characters must be homoplastic (c) polyphyletic groups are preferred (d) outgroup analysis is rarely used (e) shared derived characters are the preferred evidence for relatedness
Construct a cladogram (This is all about Biology: Systematics Based on Evolutionary Relationships: Cladistics and Phylogeny).
Steps:
1. Choose a group of organisms (e.g. invertebrates);2. Download pictures of different species.3. In tabular form, list all the characters. Evaluate the characters (whether primitive or derived).4. Remember that in building your cladogram, use only shared derived characters.5. Construct your own cladogram.
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_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_forwardINTERPRET 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_forward
- 4Scientists should only use derived traits to construct phylogenies because many fossil species retain only derived traits. derived traits are under greater genetic control than are analogous and homologous traits. all organisms have homologous traits. analogous and homologous traits do not tell us anything about close phylogenetic relationships.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. 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
- TEST I: MATCHING TYPE: Match the concept of column A in column B. Write your answer on the column before each number. A В 1. systematics 2. taxonomy 3. identification 4. nomenclature 5. classification 6. description A. binomials B. group of organisms C. evolutionary history D. unique features E. shared derived characteristics F. numerical taxonomy 7. dichotomous key G. primitive 8. cladogram 9. scientific names H. species concept I. Presents two choices based on the key characteristics of the organisms. J. Assignment of attributes or features to a 10. taxon taxon. K. Associating an unknown taxon to a known one. 11. phylogeny 12. phenetic L. Arrangement of entities into some type of order. 13. apomorphies M. Assignment of names utilizing a formal system. N. Conceptually represents evolutionary pattern of descent. O. Describes biodiversity. P. Human verbal speech Q. outgroup R. Carl Linnaeus 14. synapomorphies 15. plesiomorphic and analyses Earth'sarrow_forwardTRUE OR FALSE 1. The science of cladistics produces a system for naming and classifying organisms. 2. The broadest categories in the system of classification, bellow kingdom level, are called phyla. 3. The only taxonomic unit that is needed to be written in entirely lower case letters are the genus level. 4. When all the organisms in one taxon comes from a single common ancestor, the taxon is considered to be monophyletic. 5. The presence of opposable thumbs in humans and other apes means that we share a common ancestor; this character shows homology. 6. When a derived character is shared by members of the clade, the process is called a symplesiomorphy. 7. Sexually and asexually reproducing organisms which includes polyphyletic groups are known as the phylogenetic species concept. 8. Sympatric speciation occurs when the formations of new species happen in the same geographic area. 9. When a tree is unrooted, it is not necessary needed to have an outgroup. 10. Derived characters are…arrow_forwardDefine/discuss the following terms simply: (a) animal taxonomy (b) phenetic systematics (c) cladistics (d) clade (e) monophyleticarrow_forward
- 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_forwardIn 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 commonancestor (e) we must first identify horizontal gene transferarrow_forward1. Concept Check The similarity in bone structure and arrangement between cats and bats suggests that Humerus Radius Ulna Carpals Metacarpals Phalanges Human Cat Whale Bat a) bats originated from bird-like ancestors. b) bats originated from four-legged ancestors, such as cats. c) modern bats fly much faster than ancient bat species. © 2018 Pearson Education, Inc. 2. Concept Check Darwin proposed the theory of natural selection as the mechanism of evolution based on three observations about nature. Which of the following were part of Darwin's observations? a) Populations have the potential to produce more individuals than the environment can support. b) Individuals in some populations have varied characteristics. Variation in individuals appears to be inherited. d) all of the above © 2018 Pearson Education, Inc.arrow_forward
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