CONNECT AC INTEGRATED PRIN OF ZOOLOGY
18th Edition
ISBN: 9781266159800
Author: HICKMAN
Publisher: INTER MCG
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Chapter 37, Problem 2RQ
Summary Introduction
To determine: The meaning of the terms dispersal and vicariance and the difference between them based on disjunct distributions among animals.
Introduction: Vicariance and dispersal are the two factors that have contributed to the evolution of distinct distributional patterns in most organisms. The methods of vicariance biogeography play an important role in finding such cases.
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Choose True for yes and False for no, for each of the statements
1) The distribution of the two species-C populations cannot be explained by two totally independent dispersal events by the common ancestor species of A and B.
True or false
2) B must share a more recent common ancestor with C1 than it does with C2.
True or false
Which of the following models, that attempt to explain human origins and dispersal, no longer is supported due to current information supplied by genetic evidence? In other words, which model has been thrown out while the other two are still being debated?
Group of answer choices
multiregional model
partial replacement model
complete replacement model
A species that has a high rate of long-distance dispersal is more likely to colonize new habitat. But that species may also be less likely to adapt to local conditions, because migration will be stronger than local selection pressures for many loci. In light of those considerations, when do you expect that increasing dispersal might result in the evolution of a larger geographic range, and when might it not?
Chapter 37 Solutions
CONNECT AC INTEGRATED PRIN OF ZOOLOGY
Ch. 37 - What are some reasons a species may be absent from...Ch. 37 - Prob. 2RQCh. 37 - Who first proposed the continental-drift theory?...Ch. 37 - Prob. 4RQCh. 37 - Prob. 5RQCh. 37 - What are the consequences of climatic cycles for...Ch. 37 - Prob. 7RQCh. 37 - Prob. 8RQCh. 37 - Prob. 9RQCh. 37 - Prob. 10RQ
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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
- Provide three biological reasons why sycamore aphid numbers and distributions may differ between leaves on the same tree?arrow_forwardA species that has a high rate of long-distance dispersal is more likely to colonize new habitat. But that species may also be less likely to adapt to local conditions, because migration will be stronger than local selection pressures for many loci. in light of those considerations, when do you expect that increasing dispersal might result in the evolution of a larger geographic range, and when might it not? Your answerarrow_forwardDescribe and give example of Temporal in adaptation and speciation.arrow_forward
- What conditions must exist for frequencies to remain stable over multiple generations?arrow_forwardYou want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don't feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional 5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.arrow_forwardFor the species: Polyommatus eleniae Use this link : https://www.iucnredlist.org/species/173273/6983441 to answer the following What is known about the genus? Who discovered this species? When and where was your species first discovered? What makes your species a species (what is different about them, which character etc.)? What do we know about its distribution and habitat needs?arrow_forward
- Explain the difference in behaviors of temporally isolated species when it comes to Allopatric vs Sympatric speciation.arrow_forwardHow come dispersal is still allopatric speciation? I was under the impression that a new geographical barrier would have to develop and separate a once-uniform species. Also, what's the difference between vicariance and allopatric speciation?arrow_forwardbriefly explain why there is species variation?arrow_forward
- Consider a species that occupies a large, but fixed, number of islands. The distribution of the species across all islands is maintained by a balance between local extinctions and local colonization events. Devise a model for the relationship between the fraction of islands occupied by the species and time. Be clear to outline the assumptions you make and be sure to describe your key predictions. Please provide a model for this relationship and be clear to outline the assumptions you make and be sure to describe your key predictionsarrow_forwardDoes dispersal occurrence necessarily mean that gene flow occurs?arrow_forwardDifferentiate between allopatric speciation by dispersaland by vicariance, and give an example of each.arrow_forward
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