BIOLOGY >PRINT UPGRADE<
11th Edition
ISBN: 9780357091586
Author: Solomon
Publisher: CENGAGE L
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Chapter 22, Problem 17TYU
Summary Introduction
To draw: The cladogram that represents the reasonable hypothesis of human evolution at genus level.
Concept introduction: In cladogram, closely-related species are often placed close to each other. The cladogram is a representative diagram of lineages showing nodes and common ancestors. These genera are recognized in the course of human evolution: Ardipitheines, Australopithecines, and Homo.
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Construct a cladogram that provides one hypothesis about the evolutionary history for these 6 taxa. Be sure to map each of the character states for every taxon represented in the character matrix. See tips below to help get you started. You can insert a photo of a hand drawn cladogram or create one on your device. Keep in mind that cladograms are hypotheses, there are many different cladograms that can be constructed.
a) Which characteristics were identified as homoplasies on your cladogram?
b) Now that your tree has been constructed, how confident do you feel in your hypothesis and why?
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A 2015 article in Nature has summarized the early history of jawed vertebrates using highlights from recent discoveries and how they have changed our understanding of vertebrate evolution.
https://www.sciencedaily.com/releases/2014/04/140416133336.htm
Question: Given these recent discoveries, how should the cladogram below change? Describe it. It will likely be helpful to reference a synapomorphy noted on the cladogram.
Chapter 22 Solutions
BIOLOGY >PRINT UPGRADE<
Ch. 22.1 - Describe the structural adaptations that primates...Ch. 22.1 - Prob. 1CCh. 22.1 - Prob. 2CCh. 22.2 - Prob. 2LOCh. 22.2 - Distinguish among anthropoids, hominoids, and...Ch. 22.2 - Prob. 1CCh. 22.2 - Prob. 2CCh. 22.3 - Describe skeletal and skull differences between...Ch. 22.3 - Prob. 5LOCh. 22.3 - Prob. 6LO
Ch. 22.3 - Prob. 7LOCh. 22.3 - Prob. 1CCh. 22.3 - Prob. 2CCh. 22.3 - Prob. 3CCh. 22.3 - Prob. 4CCh. 22.3 - Prob. 5CCh. 22.4 - What are the generally recognized cultural stages...Ch. 22.4 - Prob. 1CCh. 22 - Prob. 1TYUCh. 22 - The anthropoids are more closely related to...Ch. 22 - Prob. 3TYUCh. 22 - Prob. 4TYUCh. 22 - Scientists collectively call humans and their...Ch. 22 - Prob. 6TYUCh. 22 - Some scientists now think that fossils identified...Ch. 22 - Prob. 8TYUCh. 22 - ___________ were an early group of humans with...Ch. 22 - The modern human skull lacks (a) small canines (b)...Ch. 22 - Prob. 11TYUCh. 22 - Prob. 12TYUCh. 22 - If you were evaluating whether other early humans...Ch. 22 - Prob. 14TYUCh. 22 - EVOLUTION LINK What was the common ancestor of...Ch. 22 - Prob. 16TYUCh. 22 - Prob. 17TYUCh. 22 - Prob. 18TYU
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- Structures in two different species may be similar because of either of two very different reasons. Describe these two reasons. You must use all four of the following terms in your explanation: homologous structures, analogous structures, convergent evolution, and divergent evolutionarrow_forwardIdentify what is being described by each of the following statements. Write your best answer on the blank provided before the item. 1) Figure 20 shows that the European otter (Lutra lutra) and the American badger (Taxidea taxus) belong to the same group through a common ancestor. In cladistics, what is such a grouping called? 2) This refers to a treelike diagram that shows the evolutionary relationships of species based on derived characters. 3) In cladistics, this refers to a characteristic that is not found in the common ancestor of a group of organisms being studied. 4) Vertebrate skeletons perform the same basic function, are made up of the same materials and are composed of the same parts. This kind of skeletal organization is believed to be inherited from and originated by a common vertebrate ancestor. What are characteristics such as the organization of the vertebrate skeleton called? 1 5) These are biological molecules, such as DNA or a protein, whose rate of evolution can be…arrow_forwardA phylogenetic tree is different from a cladogram in that ... Group of answer choices A: it shows that all species are not related to a common ancestor, but each has a distinct archetype. B: it represents the time scale of evolution, including where extinct species fit in. C: it uses an outgroup to compare a small group of species that exhibit similar traits D: it is not based on genetic or morphological evidence.arrow_forward
- Answer all this questions very CAREFULLY and CORRECTLY.arrow_forwardReferring to the phylogenetic tree shown above, answer the following questions: 1. How many OTUs are included in the phylogenetic analysis? 2. How many clades are there? 3. What is an autapomorphic trait of the domestic cat? Explain why? 4. What is the shared derived trait (synapomorphy) in the Family Felidae? Explain why?arrow_forwardNow, assume that tuna and dolphins are sister species. Redraw the phylogenetic tree accordingly. Use hatch marks to indicate the origins of characters 1-6?arrow_forward
- Construxt your cladogram from this dataarrow_forwardUse the table of derived characters below for 7 different organisms and construct a cladogram that represents this data. The characters should be placed along the diagonal line, and the organisms should be listed above the vertical lines. Derived Characters segmented jaws hair placentamulticellular limbs |kangaroo earthworm amoeba lizard cat sponge salmon + 1. 3 -F Azraarrow_forwardMake a list of at least 10 morphological characters that you might use to generate a phylogenetic tree of the Caminalcules. Ignore the numbers found next to each Caminalcules- they do not represent who evolved first, second, etc. 2.Construct a phylogenetic tree of relationships (Hint: it may be easiest to cut out the critters so you can move them easily and then paste on them on a paper and draw the branches accordingly). 3.Identify at least 2 recent common ancestors and write at least three critical morphological changes along the branches on which they occurred. For example, did the claws appear (or disappear) as the different species evolved? 4.Take a picture of your phylogenetic tree and submit it with this document. ***Please note, this lab can be frustrating because you are “creating” the evolutionary story of how these critters evolved and who is more closely related to who (or not) along the way. There is no wrong answer since every student will focus on different…arrow_forward
- There are two hypotheses to explain the pattern of Human Evolution: 1) Progressive Evolution of a Single Lineage ; 2) Evolutionary Radiation Which of these hypotheses are supported by evidence, and briefly explain why? Please explain in detailsarrow_forwardCladograms and phylogenetic trees are both examples of evolutionary trees. While both types contain groups of organisms that descended from a common ancestor, phylogenetic trees are typically constructed in a way where the length of the "branches" and their relation to other organisms on the tree represent the inferred evolutionary change that actually occurred. On the other hand, cladograms typically display "branches" that are of equal distance to one another.The primary purpose of this assignment is for you become comfortable reading evolutionary trees, to accurately determine recent common ancestors, to identify which organisms are extinct (dead), extant (living), and the general relationship genetics plays in the overarching process of evolution. 1. What types of evidence could scientists look at to make an accurate evolutionary tree?arrow_forwardConsider the cladogram shown. 1. Which pair of species shares the greatest number of derived characters (synamorphies)? 2. Which species has the greatest number of ancestral character states (plesiomorphies)?arrow_forward
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