Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
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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What are hybrid zones, and why can they be viewed as“natural laboratories” in which to study speciation?
Chapter 24 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
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 - Prob. 3CCCh. 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 - Prob. 9TYUCh. 24 - Prob. 10TYUCh. 24 - WRITE ABOUT A THEME: INFORMATION In sexually...Ch. 24 - Prob. 12TYU
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- Which 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_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
- How can speciation occur sympatrically?arrow_forward1. Are there any advantages in breeding organisms from closely related species? Explain.arrow_forward3. Can the populations make hybrid offspring? Is there evidence that individuals from the popula- tions interbreed to make hybrid offspring? If so, are the offspring plentiful, healthy, and able to reproduce? Example: Lions and tigers don't normally mate in nature, but in captivity they sometimes produce hybrid offspring. These offspring are rare, short-lived, and unable to reproduce. Evidence: Healthy offspring Offspring are rare or less likely to reproduce No Consider the evidence together. Do you think the populations make healthy hybrid offspring? offspring N/A 1 2 3 4 5arrow_forward
- 1. Anagenesis (non-branching speciation), in which the ancestral and descendant populations do not co- exist in time, but might have occupied the same geographic area, is thought to have occurred in the case: A. of the evolution of several Hawaiian honeycreepers from a single Asian migratory species B. of the evolution of the polar bear Ursus arctos maritimus from the brown bear in Kamchatka C. of the evolution of 13 Galapagos finches from a single South American migratory species D. of the evolution of the proto-horse Merychippus from the near-horse Parahippus on prairies E. of the evolution of the arctic fox from the swift fox in tundra regions of North Americaarrow_forward4. When Asian rosefinches first arrived in the Hawaiian Islands (about 4.0 million years ago), they diversified into a number of different species on different islands. Since the Pacific Ocean was a barrier between these islands before the ancestral species first arrived, this represents which pre-zygotic barrier? A. allopatric isolation by means of vicariance B. gamete isolation C. mechanical isolation D. habitat isolation E. allopatric isolation by means of dispersalarrow_forward5. Darwin's finches evolved into many separate species on the Galapagos Islands, with the Pacific Ocean as a barrier to their interbreeding. Since the Pacific Ocean was a barrier between these islands before the ancestral finch first arrived, this represents which of the following pre-zygotic barriers? A. allopatric isolation by means of vicariance B. gamete isolation C. mechanical isolation D. habitat isolation E. allopatric isolation by means of dispersalarrow_forward
- Can speciation occur without complete physical separation of populations?arrow_forward5- Which of the following examples suggested to Charles Darwin that hybridization between different animal species was often of no benefit to the hybrid animals? crossing of a female European wildcat with a male housecat to produce fertile hybrids crossing of a female gray wolf with a male coyote to produce fertile hybrids crossing of a male donkey with a female horse to produce sterile hybrids crossing of a male dog with a female gray wolf to produce fertile hybrids crossing of a female housecat with a male African wildcat to produce fertile hybridsarrow_forwardWhat factors must be present for allopatric speciation to occur?arrow_forward
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