Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 19, Problem 9RQ
Which of the following evolutionary forces can introduce new
- natural selection and genetic drift
- mutation and gene flow
- natural selection and nonrandom mating
- mutation and genetic drift
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Students have asked these similar questions
Which of the following is the hypothesis that individuals who possess favorable traits are more likely to survive and reproduce than those who possess less favorable traits?
genetic drift
gene flow
mutation
natural selection
Godfrey Hardy and Wilhelm Weinberg stated the principle of equilibrium to describe the genetic makeup of a population. The theory, also known as the Hardy-Weinberg principle of equilibrium, states that a population’s allele and genotype frequencies are inherently stable. Which of the following phenomena could disrupt this equilibrium?
Mutations
Selection pressure
Migration
All of the given choices
Which of the following is the most powerful evolutionary force in large populations
over time?
migration
mutation
genetic recombination
natural selection
Chapter 19 Solutions
Biology 2e
Ch. 19 - Figure 19.2 In plants, violet flower color (V) is...Ch. 19 - Figure 19.4 Do you think genetic drift would...Ch. 19 - Figure 19.8 In recent years, factories have become...Ch. 19 - What is the difference between micro- and...Ch. 19 - Population genetics is the study of: how selective...Ch. 19 - Which of the following populations is not in...Ch. 19 - One of the original Amish colonies rose from a...Ch. 19 - When male lions reach sexual maturity, they leave...Ch. 19 - Which of the following evolutionary forces can...Ch. 19 - What is assortative mating? when individuals mate...
Ch. 19 - When closely related individuals mate with each...Ch. 19 - What is a cline? the slope of a mountain where a...Ch. 19 - Which type of selection results in greater genetic...Ch. 19 - When males and females of a population look or act...Ch. 19 - The good genes hypothesis is a theory that...Ch. 19 - Solve for the genetic structure of a population...Ch. 19 - Explain the Hardy-Weinberg principle of...Ch. 19 - Imagine you are trying to test whether a...Ch. 19 - Describe a situation in which a population would...Ch. 19 - Describe natural selection and give an example of...Ch. 19 - Explain what a cline is and provide examples.Ch. 19 - Give an example of a trait that may have evolved...Ch. 19 - List the ways in which evolution can affect...
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3. CAUTION Why is genetic drift aptly named?
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b. I...
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- In which of the following pairs do both evolutionary processes introduce new genetic variation into a population? a. natural selection and genetic drift b. mutation and gene flow c. natural selection and gene flow d. gene flow and genetic driftarrow_forwardWhich of the following is not true of natural selection? (a) natural selection acts to preserve favorable traits and eliminate unfavorable traits (b) the offspring of individuals that are better adapted to the environment will make up a larger proportion of the next generation (c) natural selection directs the course of evolution by preserving the traits acquired during an individuals lifetime (d) natural selection acts on a populations genetic variability, which arises through mutation (e) natural selection may result in changes in allele frequencies in a populationarrow_forwardWhich of the following is true about natural selection? Group of answer choices it acts on individuals it typically does not involve changes in genotype frequencies in a population it involves individuals willfully changing their genotype and/or phenotype in order to become better matched to their environment and leave more offspring it is a random process it involves humans increasing the frequency of desirable traits in a species by selecting which individuals breedarrow_forward
- According to the principle of Hardy-Weinberg, which of the following will NOT change the frequencies of genotypes in a population? Select one: Genetic drift Natural selection Mutation Random matingarrow_forwardWhen imbalances occur in the sex ratio of sexual species that have two sexes (i.e other than a 50:50 ratio). the members of the minority sex often receive a greater proportion of care and resources from parents then do the offspring of the majority sex. this is most clearly an example of? genetic drift, directional selection, frequency dependent selection, stabilizing selection, or postzygotic barrierarrow_forwardEach of the following has a better chance of influencing genotype frequencies in small populations than in large populations, but which one has the greatest influence in small populations? Group of answer choices Non-random mating Natural selection Gene flow Genetic drift Mutation PreviousNextarrow_forward
- What is the source of genetic variation in a population? Natural selection Mutation and sexual reproduction Adaptationarrow_forwardWhat is the difference between genetic drift and natural selection? Genetic drift is the random increase or decrease of certain genes in a population; natural selection is not random. Genetic drift is the frequency of genes in a population; natural selection is the frequency of adaptations in a population. Genetic drift is the change in a population’s genes over time; natural selection is the evolution of a population over time. Genetic drift is the selection of random traits in a population; natural selection is the selection of specific traits.arrow_forwardNatural selection is based on all of the following except individuals who survive longer tend to have more offspring than those who die young genetic variation exists within populations Individuals adapt to their environments and, thereby, evolve populations tend to produce more offspring than the environment can support the best adapted individuals tend to reproduce morearrow_forward
- Which of the following are factors that can impact genetic variation in a population? (Select all that apply.) Lack of natural selection Random mating Mutation | Migrationarrow_forwardWhich of the following are true of natural selection? Group of answer choices it is a variational process it is a linear process it decreases genetic diversity in populations it is a random process it is a transformational processarrow_forwardNatural Selection is an evolutionary force that acts at phenotypic and genetic level. At the genetic level, which of the following statements is correct about the action of this force: O Selection is random and doesn't need genetic diversity in the population O Selection decreases the genetic diversity in the population O Selection is always negative and makes traits undesirable O Selection creates new alleles in the populationarrow_forward
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