EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 24, Problem 2CQ
Summary Introduction
To determine: The comparison and contrasting features of four patterns of natural selection and also determine sexual selection.
Introduction: The process of natural selection can operate in a population either in the form of directional, disruptive, balancing or stabilizing types of natural selection. In all these processes, selection of alleles in the population is based on various factors related to alleles.
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Sexual and Ecological selection often oppose each other: give 2 examples
When discussing natural selection and behaviour, we often say that members of a species have certain behavioural traits because those traits are adaptive, in the sense that they increase inclusive fitness relative to alternative forms of those traits that have existed in the past. Instead of emphasizing the adaptiveness of behavioural traits, some biologists describe natural selection as a process that operates on nervous system traits, increasing the prevalence within a population of particular patterns of neural circuitry and neurobiological mechanisms. As an alternative to emphasizing either the behaviour or the nervous system, some biologists describe natural selection as a process that operates on genes; according to this perspective, certain forms of certain genes (ie., particular alleles) increase in prevalence within a population relative to alternative forms of those genes. Which, if any, of these three perspectives on natural selection and behaviour do you think is the most…
Consider the roles of different types of selective pressure.
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selection. For each, explain if the trait would be favored by one type of selection but selected against by
another type of selection.
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Chapter 24 Solutions
EBK BIOLOGY
Ch. 24.1 - Prob. 1CCCh. 24.2 - Prob. 1CCCh. 24.2 - Prob. 2CCCh. 24.2 - Prob. 3CCCh. 24.3 - Prob. 1CCCh. 24.3 - Prob. 1EQCh. 24.3 - Prob. 2EQCh. 24.3 - Prob. 3EQCh. 24.4 - Genetic Drift Concept Check: How does the...Ch. 24.4 - Prob. 1BC
Ch. 24.5 - Prob. 1CCCh. 24.5 - Prob. 1BCCh. 24 - Population geneticists are interested in the...Ch. 24 - The Hardy-Weinberg equation characterizes the...Ch. 24 - Prob. 3TYCh. 24 - Prob. 4TYCh. 24 - Prob. 5TYCh. 24 - Prob. 6TYCh. 24 - Prob. 7TYCh. 24 - Prob. 8TYCh. 24 - Kimuras proposal regarding neutral variation...Ch. 24 - Populations that experience inbreeding may also...Ch. 24 - Prob. 1CQCh. 24 - Prob. 2CQCh. 24 - Prob. 3CQCh. 24 - Antibiotics are commonly used to combat bacterial...Ch. 24 - Discuss die similarities and differences among...
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- Natural selection and artificial selection or selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. Changes in genetic traits have occurred over generations through both natural selection and selective breeding although the occur through different means. What characterizes only artificial selection? Choose all that apply. A) chickens that lay larger eggs are favored B) selection increases the chances of surviving C) selection make a species stronger and fit for survival D) selection favors the desired characters in the new organismsarrow_forwardDescribe the major components of the runaway sexual selection hypothesis.arrow_forwardExplain the similarities and differences between natural selcection, artificial selection and sexual selection and provide an example of each process.arrow_forward
- Define natural selection using the 5 points below to explain its role in understanding primate behavior. (1) there is variation among individuals; (2) some of that variation is heritable; (3) there is always competition between individuals for resources; (4) some variants outcompete other variants and leave more offspring; (5) to the extent that the parent's traits are heritable, then a larger portion of the next generation will reflect those traits.arrow_forwardConsider the four postulates of natural selection. How have humans manipulated each of these postulates in natural or artificial systems?arrow_forwardMake up at least one example of each type of selection using hypothetical organisms, phenotypes, and environmental conditions. Example of directional selection: Example of stabilizing selection: Example of diversifying selection: Example of natural selection:arrow_forward
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