Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 24.3, Problem 1CC
- 1. What are hybrid zones, and why can they be viewed "natural laboratories" in which to study
speciation ?
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6 Create a concept map using the following terms/concepts: sympatric speciation, polyploid speciation, habitat differentiation, sexual selection,
autopolyploid, allopolyploid. Add definitions for each term/concept and make connections where necessary.
9. How can changing environmental conditions or unpredictable events alter gene flow and “jump-start” speciation?
7. How can two species be nearly identical with regard to genotype but very different
phenotypically? How can variations in genotype (but not necessarily phenotype) lead to
potential speciation?
Chapter 24 Solutions
Campbell Biology
Ch. 24.1 - Prob. 1CCCh. 24.1 - WHAT IF? Suppose two bird species live in a...Ch. 24.2 - Summarize key differences between allopatric and...Ch. 24.2 - Prob. 2CCCh. 24.2 - WHAT IF? Is allopatric speciation more likely to...Ch. 24.2 - MAKE CONNECTIONS Review the process of meiosis in...Ch. 24.3 - 1. What are hybrid zones, and why can they be...Ch. 24.3 - WHAT IF? Consider two species that diverged while...Ch. 24.4 - Speciation can occur rapidly between diverging...Ch. 24.4 - Prob. 2CC
Ch. 24.4 - MAKE CONNECTIONS Compare Figure 13.12 with Figure...Ch. 24 - Explain the role of gene flow in the biological...Ch. 24 - Can factors that cause sympatric speciation also...Ch. 24 - What factors can support the long-term stability...Ch. 24 - Is speciation something that happened only in the...Ch. 24 - The largest unit within which gene flow can...Ch. 24 - Prob. 2TYUCh. 24 - Prob. 3TYUCh. 24 - Prob. 4TYUCh. 24 - Which of the following factors would not...Ch. 24 - Plant species A has a diploid chromosome number of...Ch. 24 - Prob. 7TYUCh. 24 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 24 - WRITE ABOUT A THEME: INFORMATION In sexually...Ch. 24 - Prob. 10TYU
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- 1. Aside from the provided species concepts, if you are to MAKE YOUR OWN SPECIES CONCEPT, how would you define it? Discuss it and note that it should be your own definition for species concept, not others.arrow_forward5. How might climate change affect the creation of new hybrid zones? 6. What is the difference between a punctuated pattern of speciation and a gradual pattern of speciation? 7. What is a possible genetic mechanism for gradualism? 8. What is a possible genetic mechanism for punctuated equilibrium?arrow_forward3. Imagine a scenario in which each replicate represents an isolated population, how would genetic drift impact the diversity between multiple isolated populations? How would you connect this diversity with the idea of gene flow and speciation?arrow_forward
- 1. List down at least 3 different traits that can be introduced to organisms to change their properties and give examples of modified traits using cloned genes and their and their applications. 2. What are the various types of reproductive isolating mechanisms that can lead to speciation? -What are the different modes of speciation? -Explain how evolution produce the tremendous amount of diversity among organisms.arrow_forwardWhich situation would most likely lead to allopatric speciation? Flood causes the formation of a new lake A storm causes several large trees to fall down A mutation causes a new trait to develop An injury causes an organism to seek out a new food source.arrow_forwardWhat are hybrid zones, and why can they be viewed as“natural laboratories” in which to study speciation?arrow_forward
- 1. Differentiate between Sympatric, Allopatric and Parapatric Speciation.arrow_forward3. Sympatric speciation, in which the ancestral and descendant populations occupy exactly the same geographic area, with potential for hybridization between them, was first demonstrated (for animals): A. in the evolution of the polar bear Ursus arctos maritimus from the Kamchatka brown bear B. in the evolution of several Hawaiian honeycreepers from a single Asian migratory species C. in the evolution of metal-tolerant Anthoxanthum odoratum from metal-sensitive ancestors D. in the evolution of 13 Galapagos finches from a single South American migratory species E. in the evolution of the apple-maggot fly Rhagoletis pomonella from hawthorn fruit fliesarrow_forward6. Why does raising fruit flies on different food sources potentially lead to speciation?7. What evidence shows that sexual selection and mate choice can lead to speciation?8. What are hybrid viability and hybrid breakdown? 9. Why are donkeys and horses considered separate species even though they can mate?10. How does gene flow support the observation that sympatric animal species do not usually speciate?arrow_forward
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