Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 19.3, Problem 3CC
WHAT IF? Fossils show that dinosaurs originated between 200 and 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.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
WHAT 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.
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?..
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 ancestor
Chapter 19 Solutions
Campbell Biology in Focus
Ch. 19.1 - How did Huttons and Lyells ideas influence Darwins...Ch. 19.1 - MAKE CONNECTIONS Scientific hypotheses must be...Ch. 19.2 - How does the concept of descent with modification...Ch. 19.2 - Prob. 2CCCh. 19.2 - MAKE CONNECTIONS Review the relationship between...Ch. 19.3 - Explain how the following statement is inaccurate:...Ch. 19.3 - How does evolution account for (a) the similar...Ch. 19.3 - WHAT IF? Fossils show that dinosaurs originated...Ch. 19 - Which of the following is not an observation or...Ch. 19 - Which of the following observations helped Darwin...
Ch. 19 - Prob. 3TYUCh. 19 - The upper forelimbs of humans and bats have fairly...Ch. 19 - DNA sequences In many human genes are very similar...Ch. 19 - SCIENTIFIC INQUIRY DRAW IT Mosquitoes resistant to...Ch. 19 - FOCUS ON EVOLUTION Explain why anatomical and...Ch. 19 - FOCUS ON INTERACTIONS Write a short essay (about...Ch. 19 - SYNTHESIZE YOUR KNOWLEDGE This honeypot ant (genus...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Define histology.
Fundamentals of Anatomy & Physiology (11th Edition)
What were the major microbiological interests of Martinus Beijerinck and Sergei Winogradsky? It can be said tha...
Brock Biology of Microorganisms (14th Edition)
Explain why hyperthermophiles do not cause disease in humans.
Microbiology with Diseases by Taxonomy (5th Edition)
The term ‘spore’.
Biology Science Notebook
Some people compare DNA to a blueprint stored in the office of a construction company. Explain how this analogy...
Biology: Concepts and Investigations
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- 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 ancestorarrow_forwardCarbon-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? Explainarrow_forwardGive typed explanation of both otherwise leave itarrow_forward
- \. Read some papers (find them using any of several literature-search engines that your instructor can suggest) that make different estimates of the timing of either the origin of bilaterian animal phyla or the orders of mammals. How different are the estimates based on molecular clock evidence versus paleontological evidence? What might account for these differences, and how might they be resolved?arrow_forwardA number of scientists believe that the Permian extinction was caused by huge volcanic lava flows (from the Siberian traps) that may have caused low oxygen concentrations compared to the high oxygen levels in the Permian. Does this low oxygen level after the Permian extinction make it likely that dinosaurs, especially large ones, did not evolve immediately after the Permian extinction (252 million years ago)? Why or why not?arrow_forwardWHAT IF? If the most recent common ancestor of Tulerpeton and living tetrapods originated 370 millionyears ago, what range of dates would include the origin of amphibians?arrow_forward
- WHAT IF? If you discovered a fossil of an extinct mammal that lived high in the Andes, would you predict thatit would more closely resemble present-day mammalsfrom South American jungles or present-day mammalsthat live high in Asian mountains? Explain.arrow_forwardⒸ Macmillan Learning There are many examples of species that were ancestral to or closely related to the ancestors of modern humans, Homo sapiens sapiens. The figure shows when several key human ancestors were alive. Label the figure with the names of the human ancestral species. Millions of years ago 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Australopithecus africanus Ardipithecus ramidus Australopithecus boisei Australopithecus afarensis Homo erectus Answer Bank Homo habilis Homo sapiens sapiens Australopithecus robustus Homo neanderthalensisarrow_forward1 which two organisms are most closely related? 2. Which of the following characteristics would be considered an ancestral trait for all the organisms shown? 3. What characteristics do rag-finned fish and amphibians share?arrow_forward
- 1. 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_forwardEvolution in Humans: 1) describe several techniques that paleontologists today use to establish fossil age 2) describe how tracking changes in DNA sequence among related organisms can be used to create a migration maparrow_forward. WHAT IF? Imagine that we could replay the history oflife. Is it possible that a group of vertebrates that colonized land could have arisen from aquatic gnathostomesother than the lobe-fins? Explain.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Fossil: The Language & History of Paleontology; Author: Alliterative;https://www.youtube.com/watch?v=x9yNwRBlKtU;License: Standard youtube license