Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 21, Problem 7TY
Summary Introduction
Introduction:
A phylogenetic tree is a diagram that presents the evolutionary relationship among different species based on biological diversity data. In a phylogenetic tree, species are found at the tip of the tree. Each branch point is called nodes and they represent divergent events. Most recent common ancestors lie at each branch point.
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What is a taxon? is.
a group of related species
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Ophylogenetic species concept.
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evolutionary species concept.
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the evolutionary history of a species or group of related species.
Chapter 21 Solutions
Principles of Biology
Ch. 21.1 - Refer back to Figure 4.8. Which of the three...Ch. 21.1 - Prob. 1CCCh. 21.1 - Prob. 1TYKCh. 21.1 - Prob. 2TYKCh. 21.2 - Prob. 1CCCh. 21.2 - Prob. 1TYKCh. 21.2 - Prob. 2CCCh. 21.2 - Prob. 2TYKCh. 21.2 - Prob. 3TYKCh. 21.3 - What shared derived character is common to the...
Ch. 21.3 - Prob. 2CCCh. 21.3 - Prob. 1TYKCh. 21.3 - Prob. 2TYKCh. 21.4 - Prob. 1BCCh. 21.4 - Prob. 1CCCh. 21.4 - Prob. 1TYKCh. 21.4 - An analysis of the number of neutral genetic...Ch. 21.5 - Prob. 1CCCh. 21.5 - Which of the following is an example of horizontal...Ch. 21 - Prob. 1TYCh. 21 - Which of the following is the correct order of the...Ch. 21 - Which type of taxon consists of organisms with the...Ch. 21 - Prob. 4TYCh. 21 - Prob. 5TYCh. 21 - Prob. 6TYCh. 21 - Prob. 7TYCh. 21 - Prob. 8TYCh. 21 - The concept that the preferred hypothesis is (lie...Ch. 21 - Prob. 10TYCh. 21 - Prob. 1CCQCh. 21 - What is a molecular clock? How is it used in...Ch. 21 - Prob. 3CCQCh. 21 - Prob. 1CBQCh. 21 - Prob. 2CBQ
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- Match the following phylogenetic group terms with their correct definitions: Monophyletic: A group that includes a common ancestor and all of its descendants Monophyletic: A group that includes a common ancestor but not all of its descendants Paraphyletic: A group that includes a common ancestor and all of its descendants Paraphyletic: A group that includes a common ancestor but not all of its descendants Polyphyletic: A group that includes a common ancestor and all of its descendants Polyphyletic: A group that does not include the most recent common ancestor of its membersarrow_forwardChoose the correct descriptions for synapomorphies and apomorphies. Synapomorphy: A derived trait unique to a single species Synapomorphy: A shared derived trait that unites a group of organisms Apomorphy: A trait shared by all members of a group due to common ancestry Apomorphy: A derived trait that can be unique to a single speciesarrow_forwardWhen reading a phylogenetic tree, which of the following is true regarding the evolutionary relationships among the taxa represented on the tree? Taxa located at adjacent tips of the branches are always more closely related to each other than to other taxa on the tree. Therefore, a species is always equally related to the taxon on the branch immediately to the right it and the taxon on the branch immediately to the left of it The branch lengths always represent the amount of morphological change between taxa The internal nodes (branching points) of the tree represent the most recent common ancestors of the taxa connected by the branches The position of taxa on the tree is completely arbitrary and does not reflect their evolutionary relationshipsarrow_forward
- The Sweedish botanist Carolus Linnaeus is recognized as the first individual to generate a unified taxonomic system. Which of the following statements regarding the work of Linnaeus is accurate? Select all that apply. Check All That Applyarrow_forwardBranch, clade and monophyletic group are perfectly synonymous. Select one: True or Falsearrow_forwardPhylogeny refers to the evolutionary descent of taxa. It refers to the relationship between ancestors and descendants and relationships among descendant taxa. It shows the lineage of taxa which can be summarized in a branching diagram called a phylogenetic tree.1. Express some basic evolutionary relationships among groups of microorganisms, plants, and animals; 2. Illustrate the relationship of organisms with their environment; and 3. Analyze environmental factors contributing to biodiversity richness and lossarrow_forward
- what is phylogeny? A group whose members share one or more defining derived traits The evolutionary history of a species or a group of species The process of making hypotheses about evolutionary relationships among cladesarrow_forwardWhat type of species concept would you use to classify extinct species that only exist in fossils? Biological species concept Phylogenetic species concept Ecological species concept Morphological species concept Interactive species conceptarrow_forwardWhen several possible phylogenetic trees can be produced from a data set, the most parsimonious tree: O is the one that shows the smallest number of synapomorphies. O is the one that shows the largest number of nodes. O is the one that shows the largest number of analogous characteristics. O is the one that shows the smallest number of evolutionary changes. O is the one that shows the smallest number of branches.arrow_forward
- Structures shared by species because of descent from a common ancestor is referred to as... Group of answer choices homology cladistics analogy homoplasy taxonomyarrow_forwardDefine the following terms in your own words: Taxonomy Classification Description Hierarchy Identification Nomenclature Systematics Phylogeny Character Analogous character Homologous character Character state Clade Cladogramarrow_forwardMatch the correct label to locations A, B and C on the figure below. Evolutionary history, or phylogeny, is represented visually by a phylogenetic tree. Trees have a common structure, with a root, nodes, and branches. To determine evolutionary relationships among living or extinct organisms, consider the most recent common ancestors. Lizard C: Natural selection leads to new species or groups of species. Eu Jin Chew/Dreamstime.com Crocodile B: This is the common ancestor of all organisms on the tree. Infographic 16.10 Dinion for Channing World Third Edition Gert Vrey/Dreamstime.com Dinosaur (extinct) Time musk/Alamy Bird Danita Delimont/Alamy A: This is the last common ancestor of the organisms above this point in the tree (in this case, dinosaurs and birds).arrow_forward
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Phylogenetic Mysteries: Crash Course Zoology #12; Author: CrashCourse;https://www.youtube.com/watch?v=cVaw7nF72Aw;License: Standard youtube license