Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 25, Problem 4TYU
Summary Introduction
Introduction: The evolution of many species from a single ancestor is termed as adaptive radiation. It is a continuous process, where the diversification of species is in a common ancestral line. Species from a single ancestor can get fragmented into different subpopulations when isolated geographically and exposed to different environmental conditions. The species in a new habitat could establish their role in a new environment and become different from the common ancestor.
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Chapter 25 Solutions
Campbell Biology (11th Edition)
Ch. 25.1 - What hypothesis did Miller test in his classic...Ch. 25.1 - How would the appearance of protocells have...Ch. 25.1 - MAKE CONNECTIONS In changing from an "RNA world"...Ch. 25.2 - Describe an example from the fossil record that...Ch. 25.2 - WHAT IF? Your measurements indicate that a...Ch. 25.3 - The first appearance of free oxygen in the...Ch. 25.3 - What evidence supports the hypothesis that...Ch. 25.3 - WHAT IF? What would a fossil record of life today...Ch. 25.4 - Explain the consequences of plate tectonics for...Ch. 25.4 - What factors promote adaptive radiations?
Ch. 25.4 - Prob. 3CCCh. 25.5 - Explain how new body forms can originate by...Ch. 25.5 - Why is it likely that Hox genes have played a...Ch. 25.5 - MAKE CONNECTIONS Given that changes in morphology...Ch. 25.6 - How can the Darwinian concept of descent with...Ch. 25.6 - Prob. 2CCCh. 25 - Describe the roles that montmorillonite clay and...Ch. 25 - What are the challenges of estimating the ages of...Ch. 25 - What is the "Cambrian explosion," and why is it...Ch. 25 - Explain how the broad evolutionary changes seen in...Ch. 25 - How could changes in a Single gene or DNA region...Ch. 25 - Explain the reasoning behind the Statement...Ch. 25 - Level 1: Knowledge/Comprehension 1. Fossilized...Ch. 25 - The oxygen revolution changed Earth's environment...Ch. 25 - Prob. 3TYUCh. 25 - Prob. 4TYUCh. 25 - Which of the following steps has not yet been...Ch. 25 - Prob. 6TYUCh. 25 - Prob. 7TYUCh. 25 - EVOLUTION CONNECTION Describe how gene flow,...Ch. 25 - Prob. 9TYUCh. 25 - WRITE ABOUT A THEME: ORGANIZATION You have seen...Ch. 25 - Prob. 11TYU
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- Increases in species diversity arise because of A)increases in the rate of speciation. B)decreases in the rate of extinction. C)higher rates of speciation than extinction. D)All of the above The rates of extinction since the origin of life have followed which pattern? A)Gradual decrease B)Gradual increase C)No change D)Several episodes of mass extinctions, with much lower rates of fluctuating extinctions in between Which of the following statements about the outcome of the evolution of a new species through hybridization is false? A)The new species is always an intermediate of the two parent species. B)The new species may have traits that allow it to inhabit environments different from both parental species. C)The new species may have greater genetic diversity and therefore greater trait diversity than the parental species. D)All of the above How can ecological processes influence the evolution of a population? A)Ecological…arrow_forwardIdentify each of the following as an example of MICROEVOLUTION or MACROEVOLUTION.Then，state whether it supports the theory of gradualism or punctured equilibrium.（a） The Cambrian explosion（a period of rapid evolutionary change where many complex organisms evolved）.（b）The evolutionary change of animals and terrestrial plants.（c）beetles with a GREEN sheen are more prevalent than beetles with a BLACK sheen.arrow_forwardAccording to the punctuated equilibria model,(A) given enough time, most existing species will branchgradually into new species.(B) most new species accumulate their unique features relatively rapidly as they come into existence, then changelittle for the rest of their duration as a species.(C) most evolution occurs in sympatric populations.(D) speciation is usually due to a single mutation.arrow_forward
- Indicate which of the following statements concerning biostratigraphy is true. a) fossils can only be dated if they contain some amount of C14 isotope b) fossil dates are more accurate than those obtained via radiometric dating c) fossils can only be dated in ancient oceanic sediment layers d) fossils can only be dated back to a few thousands of years ago e) fossils can only be dated relative to one anotherarrow_forwardDiscuss four (4) evidence-based reasons why it is being highly proposed that we are under the Anthropocene epocharrow_forward. As coral reef communities continue to experience ocean acidification and bleaching, a population of gobbie fish and their allelic variability has rapidly decreased, this is an example of a) founder effect b) mutation c) natural selection d) gene flow e) bottleneck effectarrow_forward
- compare and contrast between the following a) allopatric speciation and sympatric speciation. b) autopolyploid speciation and allopolyploid speciation c) natural selection and sexual selectionarrow_forwardWhat is Macroevolution? A) The change of a population over several generations B) The history of a species from its origin C) The history of all populations and their descendantsarrow_forward.arrow_forward
- The oxygen revolution changed Earth’s environmentdramatically. Which of the following took advantage of thepresence of free oxygen in the oceans and atmosphere?(A) the evolution of cellular respiration, which used oxygen tohelp harvest energy from organic molecules(B) the persistence of some animal groups in anaerobichabitats(C) the evolution of photosynthetic pigments that protectedearly algae from the corrosive effects of oxygen(D) the evolution of chloroplasts after early protists incorporated photosynthetic cyanobacteriaarrow_forwardWe have looked at what the fossil record can tell us about the amazing History of Life on Earth. We've examined the evidence for an early origin for life in the sea, 3800 million years, and investigated how life invaded life about 500 million years. We've also discussed the subsequent boom in life that massively increased biodiversity but also noted how the History of Life is frequently punctuated by mass extinctions. Today we stand on the threshold of a new mass extinction event. The biodiversity that we take for granted and that sustains humans is threatened to a degree only rarely seen in 4500 million years of Earth History. NOW TO CONCLUDE, ANSWER THE QUESTION. 1. ARE WE ON THE BRINK OF A MASS EXTINCTION? WHAT WOULD BE THE CONSEQUENCES FOR SOCIETY OF LOSING HALF OF ALL SPECIES BY 2100? ARE THERE ACTIONS THAT WE CAN TAKE AS INDIVIDUALS AND AS SOCIETY TO HELP PROTECT LIFE ON EARTH?arrow_forwardWhat is adaptive radiation?arrow_forward
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