Biology: Concepts and Investigations
5th Edition
ISBN: 9781260542202
Author: Marielle Hoefnagels
Publisher: Mcgraw-hill Higher Education (us)
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
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.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Most new mutations are detrimental, yet rare beneficial mutations canbe adaptive. With regard to the fate of new mutations, discuss whetheryou think it is more important for natural selection to select againstdetrimental alleles or to select in favor of beneficial ones. Which doyou think is more significant in human populations?
Why is the elimination of a fully recessive deleteriousallele by natural selection difficult in a large populationand less so in a small population?
Why is mutation important to evolution if it is the microevolutionary force that generally has the smallest effect on allele frequencies?
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...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- if the recessive allele r is lethal, what genotypes will natural selection benefits ?arrow_forwardIn 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_forwardHow to determine whether mutation is a significant forcein changing allele frequencies ?arrow_forward
- How do the events surrounding the Peppered Moth during the industrial era in Great Britain support the theory of natural selection?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_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_forward
- n your own words, explain the factors that lead to the Phenotypic variation andits importance to evolution. explain thoroughlyarrow_forwardIn 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_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_forward
- Why is population level genetic variation important for evolution and what causes genetic variation ? How do we detect if evolution is occurring ?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_forwardI had trouble with explaining how natural selection affects alllele and genotype frequency. Does natural natural selection affect alleles by causing adaption to happen increasing the frequency of advantageous alleles?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License