Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 22.3, Problem 3CC
Summary Introduction
To predict: Whether the geographical distribution of fossils of early dinosaurs originated 200-250 million years ago would be broad or narrow.
Concept introduction:
Dinosaurs originated when there was a single large landmass in the Earth, called Pangea.
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Carbon-14 dating works for fossils up to about 75,000 years old;fossils older than that contain too little 14C to be detected. Mostdinosaurs went extinct 65.5 million years ago. (a) Can 14C be usedto date dinosaur bones? Explain. (b) Radioactive uranium-235 hasa half-life of 704 million years. If it was incorporated into dinosaurbones, could it be used to date the dinosaur fossils? Explain
WHAT IF? Fossils show that dinosaurs originated200–250 million years ago. Would you expect the geographic distribution of early dinosaur fossils to be broad(on many continents) or narrow (on one or a few continents only)? Explain.
1. Approximately when did the wooly mammoth go extinct?
2. Is the wooly mammoth related to the Asian elephant or the American Mastodon? Please explain your answer.
Use the word: common ancestor
Chapter 22 Solutions
Campbell Biology (10th Edition)
Ch. 22.1 - How did Hutton's and Lyell's ideas influence...Ch. 22.1 - MAKE CONNECTIONS Scientific hypotheses must be...Ch. 22.2 - How does the concept of descent with modification...Ch. 22.2 - WHAT IF? If you discovered a fossil of an extinct...Ch. 22.2 - Prob. 3CCCh. 22.3 - Explain how the following Statement is inaccurate:...Ch. 22.3 - How does evolution account for (a) the similar...Ch. 22.3 - Prob. 3CCCh. 22 - Why was the age of Barth important for Darwin's...Ch. 22 - Describe how overreproduction and heritable...
Ch. 22 - Summarize the different lines of evidence...Ch. 22 - Level 1: Knowledge/Comprehension 1. Which of the...Ch. 22 - Which of the following observations helped Darwin...Ch. 22 - Prob. 3TYUCh. 22 - Prob. 4TYUCh. 22 - DNA sequences in manv human genes are very similar...Ch. 22 - EVOLUTION CONNECTION Explain why anatomical and...Ch. 22 - SCIENTIFIC INQUIRY DRAW IT Mosquitoes resistant...Ch. 22 - WRITE ABOUT A THEME: INTERACTIONS Write a Short...Ch. 22 - SYNTHESIZE YOUR KNOWLEDGE This honeypot ant (genus...
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- 1. Approximately when did the woolly mammoth go extinct? 2. Is the wooly mammoth more closely related to the Asian elephant or to the American Mastodon? PLEASE EXPLAIN YOUR ANSWER. USE THE WORD: Common ancestorarrow_forwardDo not use chatgptarrow_forwardSnakes evolved from ancestors who had the ability to walk. Some snakes, in fact, still have small pelvis and leg bones that are rermnants from this ancestor. What are these called? * O Vestigial structure Homologous strucre O Sympatric structure Molecular homologyarrow_forward
- The phylogenetic tree for 12 cat species (Felidae) reproduced at right was assembled from molecular sequence data. Which species is the domestic cats closest relative? Which clade is the sister taxon to tigers? Are bobcats more closely related to cougars or to ocelots? Source: From Warren E. Johnson et al. 2006. The late Miocene radiation of modern Felidae: A genetic assessment. Science 311:7377.arrow_forwardEVOLUTION 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?arrow_forwardWhat is a vestigial structure? * A feature inherited from ancestors that has lots its original function A feature that we have in common with other species A feature that shows what our descendants will look like A type of bone found in snakes -> Cc esc %23 21 3. 6. tab n marrow_forward
- Please do fast How old are the first recognizable mammals relative to the K/T boundary layer (i.e., extinction of the dinosaurs), and from what reptilian lineage did they evolve? Is this lineage the same reptilian lineage that gave rise to birds? How are these lineages distinguished? Hold old are the first fossil birds? What other plant/animal lineages first became widespread in the Tertiary that were less common in the Cretaceous?..arrow_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_forwardPLEASE HELPPParrow_forward
- Explain at least one reasonable hypothesis about what caused the extinction of the dinosaurs at theK–T extinction (abbreviation of Cretaceous–Tertiary extinction) also called the K–Pg extinction or Cretaceous–Paleogene extinction event about 66 million years ago.arrow_forwardWhat is a transitional fossil? Transitional fossils were poorly adapted to their environments. O Transitional fossils have features that are intermediate between ancestors and descendants. Transitional fossils only existed for a short period of time. A transitional fossil is in the middle of a direct lineage stretching from ancient forms to organisms alive todayarrow_forwardHagfish Salamander Lizard Perch Mouse Chimp Pigeon Feathers Fur; mammary glands Claws or nails ungs Jaws Fig. 1. Cladogram on some vertebrates Related questions: 1. What is the synapomorhpy shared by the mouse and chimpanzee? Answer: 2. Specify the apomorphy of the pigeon. Answer: 3. Jaw is present to what taxa? Answer:arrow_forward
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Fossil: The Language & History of Paleontology; Author: Alliterative;https://www.youtube.com/watch?v=x9yNwRBlKtU;License: Standard youtube license