Campbell Biology In Focus
2nd Edition
ISBN: 9780134203072
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 22.2, Problem 2CC
WHAT IF? Is allopatric
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1. What is speciation?
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3. What postzygotic barriers are often found in hybrid zones that result in a lack of species fusion?
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Chapter 22 Solutions
Campbell Biology In Focus
Ch. 22.1 - Prob. 1CCCh. 22.1 - WHAT IF? Suppose you are studying two bird species...Ch. 22.2 - Contrast allopatric and sympatric speciation....Ch. 22.2 - WHAT IF? Is allopatric speciation more likely to...Ch. 22.2 - MAKE CONNECTIONS Review the process of meiosis in...Ch. 22.3 - What are hybrid zones, and why can they be viewed...Ch. 22.3 - WHAT IF? Consider two species that diverged while...Ch. 22.4 - Speciation can occur rapidly between diverging...Ch. 22.4 - Summarize evidence that the yup flower-color locus...Ch. 22.4 - MAKE CONNECTIONS Compare Figure 10.11 with Figure...
Ch. 22 - The largest unit within which gene flow can...Ch. 22 - Males of different species of the fruit fly...Ch. 22 - According to the punctuated equilibria model, A....Ch. 22 - Bird guides once listed the myrtle warbler and...Ch. 22 - Which of the following factors would not...Ch. 22 - Plant species A has a diploid number of 12. Plant...Ch. 22 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 22 - SCIENCE, TECHNOLOGY, AND SOCIETY In the United...Ch. 22 - FOCUS ON EVOLUTION Explain the biological basis...Ch. 22 - FOCUS ON INFORMATION In sexually reproducing...Ch. 22 - Prob. 11TYU
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- Is allopatric speciation more likely to occur on an island close to the mainland or on a more isolated island of the same size? Justify your prediction.arrow_forwardThe Bateson-Dobzhansky-Muller model: Shows how chromosomal changes can lead to sympatric speciation Shows how epistasis can lead to sympatric speciation Shows how drift, with no selection, can lead to allopatric speciation Shows how selection, with no drift, can lead to allopatric speciation Predicts that reproductive isolation will build up quickly in sympatryarrow_forwardWhat are the most common mechanisms of symptoms speciation and in which major ground of organisms does this happen most often? Distinguish between sympatric and allopatric and parapatric speciation. What is considered the (far) more common mechanism of species formation? What does "gene flow " between populations do?arrow_forward
- THIS QUESTION WILL SHOW UP ON YOUR EXAM E: Let's talk about speciation! 1. What is the definition of a species? 2. Is the creation of a new species a type of micro-evolution or macro-evolution? 3. Describe 2 prezygotic barriers that can lead to speciation. For each barrier, include an example (these can be real or made up) and identify if this barrier is allopatric or sympatric.arrow_forwardAnswer the following biology questions on evolutionarrow_forwardWhat are the most common mechanisms of sympatric speciation and in which major group of organism does this happen most often?distinguish between sympatric and allopatric and parapatric speciation what is considered the(far)more common mechanism of species formation?what does gene flow between population does?arrow_forward
- What are the most common mechanisms of sympatric speciation and in which major group of organisms does this happen most often? Disti nguish between sympatric and allopatric and parapat r ic speciation. Which is considered the (far) more common mechanism of species formation? What does "gene flow" between populations do?arrow_forwardWhat are the most common mechanism of sympatric speciation and I which major organism does this happen most often? Distinguish between sympatric and allopatric and parapatric speciation.which is considered the far more common mechanism of species formation?what does gene flow between population do?arrow_forward13 of 14 Scientists studying a population of fruit flies observe that a small percentage of the population mates in the morning while the rest of the population mates at night. Scientists predict that, over time, the population that mates in the morning and the population that mates at night will become different species. Which of the following best supports the scientists' prediction that speciation will occur in the fruit fly population? There will be fewer offspring produced in the population of fruit flies that mates in the morning than in the population of fruit flies that mates at night. There will be structural differences in the reproductive organs of the fruit flies in the population that mates in the morning and those of the fruit flies in the population that mates at night. There will be increasing geographic isolation betweenarrow_forward
- What are examples for gene flow? Select all that apply A distinct population of iguana drift to a new island that is already inhabited by members of the same species. A small population of humans colonizes a newly formed island. A fire drastically reduces the size of a white-tailed deer population. The remaining individuals spread out throughout the remaining forest. Wind blows pollen from one population of plants to another and cross-fertilization occurs. n An earthquake results in the formation of a canyon, splitting a population of toads apart.arrow_forwardA) Differentiate allopatric speciation and sympatricspeciation. Which type of speciation is more common andwhy? B) Is allopatric speciation more likely to occur inDumaran Island close to the main island of Palawan oron a more isolated island which is Culion Island of almostthe same size? Explain your prediction.arrow_forwardWhat are the most common mechanism of sympathric speciation and in which major group of organisms does this happen most often? Distinguish between sympathric and allopathric and parapathric speciation. Which is considered the (far) more common mechanism of species formation? What does "gene flow"between populations do?arrow_forward
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