Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 24, Problem 6TY
Summary Introduction
Introduction: Adaptive radiation is an important concept in evolutionary biology. The adaptive radiation is one of the few processes that allow the divergence or convergence of two or more species.
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Gene flow occurs
a. when individuals within a population interbreed.
b. as a result of genetic drift.
c. as a result of mutations in one population but not in another.
d. when an individual migrates between two otherwise isolated populations of a species.
The Galapagos archipelago consists of volcanic islands that formed within the last 5 million years. Darwin wrote of the finches on these islands, "...from an original paucity of birds in this archipelago, one species has been taken and modified for different ends." The Galapagos finches are an example of adaptive radiation driven by
a.
behavioural innovation.
b.
morphological innovation.
c.
ecological opportunity.
d.
physiological innovation.
Gene flow depends on
a. migration.
b. the ability of migrant alleles to be passed to subsequent generations.
c. genetic drift.
d. both a and b.
Chapter 24 Solutions
Biology
Ch. 24.1 - Can you think of another example of two different...Ch. 24.1 - Prob. 1CSCh. 24.1 - Is temporal isolation an example of a prezygotic...Ch. 24.1 - Prob. 3CCCh. 24.2 - Prob. 1CSCh. 24.2 - Prob. 1EQCh. 24.2 - Prob. 2EQCh. 24.2 - Prob. 3EQCh. 24.2 - Prob. 1CCCh. 24.2 - Prob. 2CC
Ch. 24.4 - Evo-Devo: Evolutionary Developmental Biology...Ch. 24.4 - Prob. 1CSCh. 24.4 - Prob. 2CCCh. 24 - Macroevolution refers to evolutionary changes that...Ch. 24 - Prob. 2TYCh. 24 - Prob. 3TYCh. 24 - Prob. 4TYCh. 24 - Prob. 5TYCh. 24 - Prob. 6TYCh. 24 - Prob. 7TYCh. 24 - Prob. 8TYCh. 24 - Prob. 9TYCh. 24 - Prob. 10TYCh. 24 - What is the key difference between prezygotic and...Ch. 24 - What are the key differences between gradualism...Ch. 24 - Prob. 3CQCh. 24 - Prob. 1COQCh. 24 - Discuss the type of speciation (allopatric or...
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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
- A small number of animals moves away from a large ancestral population on the continental mainland and colonizes an island. Which of the following is likely to occur? A. Genetic diversity will decrease on the mainland, because of a population bottleneck. B. Alleles that were more rare on the mainland are likely to become more common on the island, because of the founder effect. C. Genetic diversity will be lower on the island than the mainland, because of the founder effect. D. Mutations rates will increase on the island, in response to selection pressures in the new environment.arrow_forwardAdaptive radiation a. is the result of enriched uranium used in power plants. b. is the evolution of closely related species adapted to use different parts of the environment. c. results from genetic drift. d. is the outcome of stabilizing selection favoring the maintenance of adaptive traits.arrow_forwardWhich of the following is an example of gene flow? a. horizontal gene transfer b. sexual selection c. genetic drift d. mutationarrow_forward
- If reinforcement is weak and hybrids are not completely infertile, a. genetic divergence between populations may be overcome by gene flow. b. speciation will occur 100% of the time. c. gene flow between populations will be impossible. d. the speciation will be more likely than if hybrids were completely infertile.arrow_forwardIn nature, when a lone male lion encounters a pride (a group of lions with a male leader), the two males will often fight to become head of the pride. It has been documented that if the foreign lion wins the battle, he will usually kill the offspring of the weaker lion’s pride. This natural selection process best describes; Select one: a. Fitness within species b. Bottleneck effect c. Macroevolution d. Microevolution e. Speciationarrow_forwardOver the past several decades, natural selection has caused populations of Staphylococcus aureus (an infectious wound bacterium) to evolve resistance to most antibiotics. If antibiotic use were stopped, what would you predict would happen to these S. aureus populations? A. Horizontal gene transfer would increase B. The populations will begin colonizing new environments. C. The frequency of resistant forms will definitely increase in these populations. D. They will go extinct without the antibiotic. E. The frequency of nonresistant forms will increase in these populations.arrow_forward
- The biological species concept emphasizes whether populations a. look the same. b. have similar biochemical pathways. c. can have gene flow between them. d. share common ancestry. e. have similar ecological requirements.arrow_forwardAdaptive radiations can be a direct consequence of three of the following four factors. Select the factor that is NOT a direct consequence of adaptive radiation. Select one: a. Genetic drift b. Vacant ecological niches (niches are environment "space" where a particular organism has resources required to survive and reproduce) c. New evolutionary innovations d. Colonization of a new region that contains suitable habitat and few competitor speciesarrow_forwardWhich of the following statements is false? a. Gradual speciation is most likely to occur in a large population that lives in a stable climate. b. Punctuated equilibrium is unlikely to occur in a large population that lives in a stable climate. c. Gradual speciation and punctuated equilibrium both result in the divergence of species. d. Gradual speciation is most likely to occur in a small population that experiences a rapid change in its environment.arrow_forward
- The adaptive radiation of mammals following the extinction of the dinosaurs is an example of adaptive radiation due to a. physiological innovation. b. ecological opportunity. c. morphological innovation. d. behavioural innovation.arrow_forwardPresent-day patterns of biodiversity and genetic diversity reflect past population genetics processes. Which of the following is the most likely to have had a MAJOR contribution to present day species diversity? a. large populations b. random genetic drift c. meiosis d. emigration e. inbreedingarrow_forwardWhat condition(s) is/are necessary for the development of both antagonistic and mutualistic coevolutionary relationships?A. Intimate pairwise interactions with one or more species.B. The agents of selection that are relevant to the populations must evolve.C. Frequency-dependent selection.D. All of the above are necessary for the development of coevolutionary relationships.arrow_forward
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