Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 12, Problem 5WIO
Summary Introduction
To determine:
The mechanism of evolution that cause random changes in allele frequencies also determine the reason for random changes.
Concept Introduction:
Evolution is simply defined as descent with modification, which means inherited traits change from one generation to another. Thus, evolution is a modification or change in an allele’s frequency that is analyzed as the number of copies of that gene and the division of the entire number of alleles in the population.
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Chapter 12 Solutions
Biology: Concepts and Investigations
Ch. 12.1 - What are two ways to define evolution?Ch. 12.1 - Prob. 2MCCh. 12.2 - How does the history of evolutionary thought...Ch. 12.2 - What did Darwin observe that led him to develop...Ch. 12.2 - How might artificial selection and natural...Ch. 12.2 - What is the modern evolutionary synthesis?Ch. 12.3 - Prob. 1MCCh. 12.3 - Prob. 2MCCh. 12.3 - How can natural selection favor different...Ch. 12.3 - Prob. 4MC
Ch. 12.3 - Prob. 5MCCh. 12.4 - Prob. 1MCCh. 12.4 - Prob. 2MCCh. 12.4 - Prob. 3MCCh. 12.4 - Prob. 4MCCh. 12.5 - Prob. 1MCCh. 12.5 - Prob. 2MCCh. 12.6 - Prob. 1MCCh. 12.6 - What is the difference between intrasexual...Ch. 12.7 - Prob. 1MCCh. 12.7 - South China tigers have two color patterns...Ch. 12.7 - Prob. 3MCCh. 12.7 - Prob. 4MCCh. 12.8 - What hypothesis did Conover and Munch test?Ch. 12.8 - Prob. 2MCCh. 12 - Prob. 1MCQCh. 12 - Prob. 2MCQCh. 12 - What is the most accurate way to ex plain the...Ch. 12 - Prob. 4MCQCh. 12 - Prob. 5MCQCh. 12 - List and describe five mechanisms of evolutionCh. 12 - Explain how understanding evolution is important...Ch. 12 - Write a paragraph that describes the connections...Ch. 12 - Fraggles are mythical, mouselike creatures that...Ch. 12 - Prob. 5WIOCh. 12 - Prob. 6WIOCh. 12 - Jellyfish Lake, located on the Pacific island of...Ch. 12 - Prob. 8WIOCh. 12 - Review the Survey the Land scape figu re in th e...Ch. 12 - Add the terms genotype, phenotype, allele...
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- In a population of lizards, color is genetically determined. The current population has two two phenotypes: blue and yellow. Which of the following scenarios could result in evolution by migration? O A disease indiscriminately reduces the population by 90%. Birds are better able to see and therefor prey on blue lizards The population is joined by individuals from a nearby population that has an allele for a red phenotype. Females preferentially mate with individuals exhibiting the blue phenotype.arrow_forwardConsider the first copy of an allele for insecticideresistance that arises by mutation in a populationof insects exposed to an insecticide. Is this mutation an adaptation? If, after some generations,we find that most of the population is resistant,is the resistance an adaptation? If we discovergenetic variation for insecticide resistance in apopulation that has had no experience of insecticides, is the variation an adaptation? If an insectpopulation is polymorphic for two alleles, eachof which confers resistance against one of twopesticides that are alternately applied, is thevariation an adaptation? Or is each of the tworesistance traits an adaptation?arrow_forwardHow does natural selection act on genetic variation? How can this lead to adaptations? How can a change in allele frequency mechanize evolution?arrow_forward
- In a particular population of mice, certain individualsdisplay a phenotype called short tail, which is inherited as a dominant trait. Some individuals display arecessive trait called dilute, which affects coat color.Which of these traits would be easier to eliminatefrom the population by selective breeding? Why?arrow_forwardHow do the events surrounding the Peppered Moth during the industrial era in Great Britain support the theory of natural selection?arrow_forwardCan someone please explain the distinction of natural selection and evolution of populations?arrow_forward
- n your own words, explain the factors that lead to the Phenotypic variation andits importance to evolution. explain thoroughlyarrow_forwardWhich of the following is likely to be most important in the evolution of two species from one population of another species? O some kind of barrier that physically divides the original species into two sub-populations a change in the environment such that one sub-population experiences differential natural selection O reduced performance of gametes (e.g., pollen) in crosses between sub-populations O reduced fitness of offspring resulting from crosses between sub-populations genetic divergence and cessation of gene flow between sub-populationsarrow_forwardWhat is the role of genetic variation in natural selection?arrow_forward
- Why is it appropriate to define evolution as the change in allele frequencies of a population over time?arrow_forwardDeer mice are usually found in the woods and are dark brown in color. The deer mice that live in the Sand Hills of Nebraska, however, have evolved a lighter coloring, the result of a change in one gene. How does this information illustrate natural selection?* O Speciation occurs when groups are geographically isolated. O The population evolved when the gene frequency remained the same. O Individuals, not populations, evolve. A variation helped individuals to survive in their environment and to pass on their genes to the next generation.arrow_forwardIndividuals who are SS homozygotes suffer from a debilitating condition called sickle-cell anemia, which drastically decreases survival. But the S allele has not been eliminated by natural selection. Why?arrow_forward
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