Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 40.7, Problem 2MC
Summary Introduction
To determine:
The isolation of modern alpine chipmunk subpopulations have led to reduced genetic diversity in the species.
Concept introduction:
The division of population in subpopulations is the reason for the difference in the traits of alpine chipmunks.
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What is the function of including an outgroup in this phylogeny? After all, the point of the phylogeny is to see which Galapagos finch species are most closely related to each other.
What is the common ancestor of the Galapagos finches? What are the thirteen Galapagos finches? What characteristics make each of the thirteen finches a distinct species? How is each finch isolated from the others? What habitat does each finch live?
1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches?
A) The finches evolved traits to help them survive in different environments.
B) The finches had different traits that influenced the environment in which they chose to live.
C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive.
D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed.
Chapter 40 Solutions
Biology: Concepts and Investigations
Ch. 40.1 - Prob. 1MCCh. 40.1 - Prob. 2MCCh. 40.1 - Prob. 3MCCh. 40.1 - Prob. 4MCCh. 40.2 - Prob. 1MCCh. 40.2 - Prob. 2MCCh. 40.2 - Prob. 3MCCh. 40.3 - Prob. 1MCCh. 40.3 - What are major sources of industrial smog,...Ch. 40.3 - Prob. 3MC
Ch. 40.4 - Prob. 1MCCh. 40.4 - Prob. 2MCCh. 40.4 - Prob. 3MCCh. 40.5 - Prob. 1MCCh. 40.5 - Prob. 2MCCh. 40.5 - Prob. 3MCCh. 40.6 - Prob. 1MCCh. 40.6 - Prob. 2MCCh. 40.6 - Prob. 3MCCh. 40.7 - Prob. 1MCCh. 40.7 - Prob. 2MCCh. 40 - Prob. 1MCQCh. 40 - Prob. 2MCQCh. 40 - What is the connection between agriculture in the...Ch. 40 - Prob. 4MCQCh. 40 - Prob. 5MCQCh. 40 - Prob. 1WIOCh. 40 - Prob. 2WIOCh. 40 - Prob. 3WIOCh. 40 - Prob. 4WIOCh. 40 - Prob. 5WIOCh. 40 - Prob. 6WIOCh. 40 - In what ways is the greenhouse effect both...Ch. 40 - Explain how habitat destruction, the increasing...Ch. 40 - Prob. 9WIOCh. 40 - Prob. 10WIOCh. 40 - Prob. 11WIOCh. 40 - Prob. 12WIOCh. 40 - Prob. 13WIOCh. 40 - Prob. 14WIOCh. 40 - Prob. 1PITCh. 40 - Prob. 2PITCh. 40 - Figure 40.27 Pull It Together: Preserving...
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- When a Golden Snail was introduced to Black Native Snails, how would it impact the genetic diversity of the latter? Thank youarrow_forward1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. Not gradedarrow_forwardThree-spined sticklebacks that have colonized freshwater streams and lakes have repeatedly evolved into similar forms. The pattern can be seen in hundreds of freshwater bodies around the world. Can a single biological species arise more than once (i.e., polyphyletically)? How might this possibility depend on the nature of the reproductive barrier between such a species and its closest relative?arrow_forward
- How do mechanisms of speciation, such as genetic isolation, reproductive barriers, and ecological factors, apply to the human-chimp-gorilla trichotomy? Discuss the role of these mechanisms in driving speciation and shaping the evolutionary relationships among humans, chimps, and gorillas, based on genetic evidence such as comparative genomics and molecular phylogenetics.arrow_forwardWhich is a criticism of sympatric speciation? A.) many cases of sympatric speciation are actually microallopatry B.) allopatric speciation is less common and scientists should focus more attention on locating additional examples C.) sympatric speciation is only associated with changes in ploidy, a process so rare that it's relatively unimportant D.) since most examples of sympatric speciation involve post zygotic isolation, hybridization nearly always results in their reversalarrow_forwardThe “Progression Rule” of biogeography states that the oldest islands of an archipelago will host the oldest lineages of a radiation and the youngest islands will host the youngest lineages. The Hawaiian islands offer a number of examples of progression, one of which is depicted below. First, do Darwin’s Giant Daisies follow the Progression Rule? Second, describe a historical process of diversification and dispersal that might be responsible for the pattern you actually observe for Scalesia. This needn’t be completely precise—I don’t want every dispersal event documented!—just sufficient to capture the general process. (as a hint, he told me to consider speciation, extinction, and/or dispersal as the historical processes)arrow_forward
- What does the regional variation in archaic Homo sapiens represent in terms of the broader story of our species evolution?arrow_forwardWhat traits support classifying H. habilis and H. rudolfensis as separate species?arrow_forwardDarwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed. not graded use photoarrow_forward
- compare and contrast between the following a) allopatric speciation and sympatric speciation. b) autopolyploid speciation and allopolyploid speciation c) natural selection and sexual selectionarrow_forwardIn what theory of speciation do new species emerge within the geographic range of their ancestors?arrow_forwardwhich statement is false? 1)In the context of the evolution of senescence, the aphorism "live fast and die young" means that organisms with a more risky behavior will have a shorter life span. 2)Allopatric speciation is a type of speciation process that takes place in different geographic locations.arrow_forward
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