BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 20.7, Problem 1LO
Define and contrast disruptive, directional, and stabilizing selection.
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Describe the similarities and differences between the stabilizing, directional, and disruptive selection models.
Compare and contrast directional selection and disruptive selection, and provide an example of each.
Explain how negative frequency-dependent selection works.
Chapter 20 Solutions
BIOLOGY
Ch. 20.1 - Define evolution and population genetics.Ch. 20.1 - Prob. 2LOCh. 20.2 - Explain the HardyWeinberg principle.Ch. 20.2 - Describe the characteristics of a population that...Ch. 20.2 - Prob. 3LOCh. 20.3 - Define the five processes that can cause...Ch. 20.3 - Prob. 2LOCh. 20.4 - Prob. 1LOCh. 20.4 - Prob. 2LOCh. 20.4 - Demonstrate how the success of different...
Ch. 20.5 - Prob. 1LOCh. 20.5 - Prob. 2LOCh. 20.5 - Prob. 3LOCh. 20.6 - Define frequency-dependent selection, oscillating...Ch. 20.6 - Prob. 2LOCh. 20.7 - Define and contrast disruptive, directional, and...Ch. 20.7 - Prob. 2LOCh. 20.8 - Explain how experiments can be used to test...Ch. 20.9 - Prob. 1LOCh. 20.9 - Prob. 2LOCh. 20.10 - Prob. 2LOCh. 20 - If all white cats died, what proportion of the...Ch. 20 - Assuming that the values on the x-axis represent...Ch. 20 - Prob. 3DACh. 20 - Prob. 4DACh. 20 - Examine the index of copper tolerance on nonmine...Ch. 20 - Prob. 6DACh. 20 - Why are rare alleles particularly likely to be...Ch. 20 - Prob. 2IQCh. 20 - Prob. 3IQCh. 20 - Prob. 4IQCh. 20 - Prob. 5IQCh. 20 - Prob. 6IQCh. 20 - Prob. 7IQCh. 20 - Prob. 8IQCh. 20 - Prob. 9IQCh. 20 - Assortative mating a. affects genotype frequencies...Ch. 20 - When the environment changes from year to year and...Ch. 20 - Many factors can limit the ability of natural...Ch. 20 - Stabilizing selection differs from directional...Ch. 20 - Founder effects and bottlenecks are a. expected...Ch. 20 - Relative fitness a. refers to the survival rate of...Ch. 20 - For natural selection to result in evolutionary...Ch. 20 - Prob. 8UCh. 20 - In a population of red (dominant allele) or white...Ch. 20 - Genetic drift and natural selection can both lead...Ch. 20 - Prob. 3ACh. 20 - Prob. 4ACh. 20 - In Trinidadian guppies a combination of elegant...Ch. 20 - On large, black lava flows in the deserts of the...Ch. 20 - Based on a consideration of how strong artificial...
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Explain the difference between Disruptive Selection & Directional Selection ?
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Describe the competing selective forces acting on peacock tails. Together, do these selective forces produce disruptive, directional, or stabilizing selection?
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Explain, draw, and provide example of directional, stabilizing and disruptive selection.
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What is stabilizing selection ?
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What are two reasons why a selection limit is reached in which artificial selection no longer has an effect?
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In the following form of selection, one extreme of a variable character is selected for:
Directional Selection
Stabilizing Selection
Disruptive Selection
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Is each of the following examples due to directional, disruptive, balancing, or stabilizing selection?
A. Polymorphisms in snail color and banding pattern as described.
B. Thick fur among mammals exposed to cold climates
C. Birth weight in humans
D. Sturdy stems and leaves among plants exposed to windy climates
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How does the concept of artificial selection is applied in the creation and domestication of chihuahuas out of wolves? Explain in an explicit way.
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describe selection, confounding, and information bias provide an example for each
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answers: Disruptive selection, Directional Selection, Stabilizing selection, Hardy-Weinburg selection.
Which is correct for the stated question?
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Describe the similarities and differences among directional, balancing, disruptive, and stabilizing selection.
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Explain the stabilizing selection effects on the phenotypic mean and the amount of phenotypic variation present in a population.
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