Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 23.2, Problem 2CC
Summary Introduction
To determine: The reason for the decrease in genetic diversity due to stabilizing selection.
Introduction: The stabilizing selection can be defined as a type of natural selection in which statistical mean of a particular population stabilizes on a no-extreme value of trait. It is the most common mechanism of action of natural selection.
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Chapter 23 Solutions
Biology
Ch. 23.1 - Prob. 1CSCh. 23.2 - Prob. 1CCCh. 23.2 - Prob. 2CCCh. 23.2 - Prob. 3CCCh. 23.3 - Prob. 1CCCh. 23.3 - Prob. 1EQCh. 23.3 - Prob. 2EQCh. 23.3 - Prob. 3EQCh. 23.4 - Genetic Drift Concept Check: How does the...Ch. 23.4 - Prob. 1CS
Ch. 23.5 - Prob. 1CCCh. 23 - Population geneticists are interested in the...Ch. 23 - The Hardy-Weinberg equation characterizes the...Ch. 23 - Prob. 3TYCh. 23 - Prob. 4TYCh. 23 - Prob. 5TYCh. 23 - Prob. 6TYCh. 23 - Prob. 7TYCh. 23 - Prob. 8TYCh. 23 - Kimuras proposal regarding neutral variation...Ch. 23 - Populations that experience inbreeding may also...Ch. 23 - Prob. 1CQCh. 23 - Prob. 2CQCh. 23 - Prob. 3CQCh. 23 - Antibiotics are commonly used to combat bacterial...Ch. 23 - Discuss die similarities and differences among...
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- Measuring Genetic Diversity in Human Populations How would a drastic reduction in a populations size affect that populations gene pool?arrow_forwardMeasuring Genetic Diversity in Human Populations Why is it that mutation, acting alone, has little effect on gene frequency?arrow_forwardMeasuring Genetic Diversity in Human Populations The theory of natural selection has been summarized popularly as survival of the fittest. Is this an accurate description of natural selection? Why or why not?arrow_forward
- Question:- Why might some scientists use the morphological species concept or the ecological species concept instead of the biological species concept to define some species? Provide some examples in your reasoning.arrow_forwardFollow up on Question 2. The purpose of including species D in the phylogenetic reconstruction is so that it can be used as a. an in-group for inferring the polarity of trait evolution b. an out-group for inferring the polarity of trait evolution c. an ancestral group for inferring the polarity of trait evolution d. a monophyletic group for classifying vge gene types e. None of the abovearrow_forwardQuestion- How is genetic drift different from natural selection? choose one from below 1. Natural selection occurs because some alleles confer higher fitness, whereas genetic drift occurs because of sampling error 2. natural selection has a stronger effect in large populations, whereas genetic drift acts primarily in small populations 3. natural selection is a mechanisms of evolution, whereas genetic drift is not a mechanisms but an outcome of evolution 4. natural selection tends to cause very rapid evolution, whereas genetic drift tends to operate on much longer time scales.arrow_forward
- Systematics and Evolution Would natural selection work better on a large population or a small population? ( Consider the effects of genetic drift )arrow_forwardMAKE CONNECTIONS Explain how natural selection could increase the resemblance of a harmlessspecies to a distantly related harmful species. In addition to selection, what else could account for a harmlessspecies resembling a closely related harmful species? (See Concept 22.2.)arrow_forwardVISUAL SKILLS Consider a population in which heterozygotes at a certain locus have an extreme phenotype(such as being larger than homozygotes) that confersa selective advantage. Compare this description to themodels of selection modes shown in Figure 23.13. Doesthis situation represent directional, disruptive, or stabilizing selection? Explain your answer.arrow_forward
- Q:need help with question We looked at how the beliefs of the Theory of Special Creation were challenged by Descent with Modification. Even before Lamarck and Darwin proposed that species do change over time, what belief of the Theory of Special Creation had already been challenged? Species do not change Lineages do not split Each species is separately created Each species is independently created Earth and life are youngarrow_forwardusing venn diagram, give similarities and difference of two theories (Natural Selection and Artificial Selection)arrow_forward25. Answer the following questions based on the facts and inferences related to natural selection that we discussed in class, as well as the simulations you performed with the Evodots lab. If individuals vary, and variation affects survival and reproduction, and variation is heritable: there will be natural selection resulting in evolution. there will be no natural selection, but there will be evolution due to natural selection. there will be natural selection, but it will not result in evolution. there will be no natural selection, and there will be no evolution due to natural selection. 24. Answer the following questions based on the facts and inferences related to natural selection that we discussed in class, as well as the simulations you performed with the Evodots lab. If individuals vary, and variation affects survival and reproduction, but variation is not heritable: there will be natural selection resulting in evolution. there will be no natural selection, but…arrow_forward
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