Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 20.9, Problem 2LO
Summary Introduction
To determine: The factor that determines the evolutionary outcome when multiple processes are operating simultaneously.
Introduction: Selection pressure does lead to evolution, but it is not the requirement for evolution to occur. The members that are fit to survive in the changing condition will evolve into a more efficient and improved species.
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Construct a diagram that would show the process of natural selection.
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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- Give typing answer with explanation and conclusion What is an example of the bottleneck effect that actually happened in Earth's past? Why is that event a bottleneck and how does this bottleneck affect the evolution of the species involved?arrow_forwardsequence Darwin’s work and conclusionsarrow_forwardIdentify and explain the type of evolution exhibited by the picture below.arrow_forward
- Give typing answer with explanation and conclusion Does modern medicine affect natural selection in the human species today? Explainarrow_forwardUse examples, briefly discuss how evidence is used to support evolution. Do you agree with the use of this data/evidence? Explain your position.arrow_forwardWhat does the term evolution mean? A. The characteristics of species become more complex over time. B. The strongest individuals produce the most offspring. C. The characteristics of an individual change through the course of its life, in response to natural selection. D. The characteristics of populations change through time.arrow_forward
- Apply probability rules in geneticsarrow_forwardHow does the study of the field of archaeology help one to study evolution? a. Look for patterns in evolution b. To study human emotions c. To study evidence of fossil records d. To understand Darwin's theory of evolutionarrow_forwardExplain how comparing the sequences of two genomes canhelp to infer evolutionary relationships.arrow_forward
- The fact that DNA sequences are more similar in more closely related organisms is evidence of what?a. optimal design in organismsb. adaptationc. mutationd. descent with modificationarrow_forwardExplain into details, the concept of fitness in evolutionarrow_forwardDesign a board game about Natural Selection.arrow_forward
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