BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 20.10, Problem 2LO
Summary Introduction
To determine: Theeffect of pleiotropy and epistasis on evolutionary response to selective pressure.
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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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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- What are the importance of adaptation as a mechanism for the survival of species? Explain.arrow_forwardExplain the given quotation. " It is not the strongest of the species that survives, nor the most intelligent,but the one most responsive to change."arrow_forwardA defence mechanism is how the sea cucumber fires its internal organs at attackers. How would this defence mechanism have evolved over time due to pressure from predation and/or competition? Please explain in details.arrow_forward
- _______detect specific environmental changes, an______ pulls different bits of information together in the selection of a response, and_____ carry out the responsearrow_forwardHow would counter-current selection in fish gills be beneficial for an animal trying to get rid of CO2?arrow_forwardGive a reason why more complex organisms cannot give rise to new individual through regeneration?arrow_forward
- Discuss how changes in organisms within an environment affect their survival. Specifically discuss the effects of a gene mutation for color in beetles. << Read Lessarrow_forwardExplain how each organism’s structural adaptation relates to a specific function. Write a 1-4 sentence response for each adaptation. (Picture below)arrow_forwardExplain how natural selection can lead to adaptation.arrow_forward
- Compare and contrast the five patterns of natural selection that drive adaptation.arrow_forwardExplain, using specific examples, two reasons whySTDs may go undetected.arrow_forwardDiscuss environmental challenges of living on land, and describe how several adaptations meet these challengesarrow_forward
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