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 12RQ
What is a cline?
- the slope of a mountain where a population lives
- the degree to which a mutation helps an individual survive
- the number of individuals in the population
- gradual geographic variation across an ecological gradient
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Students have asked these similar questions
What force, which changes gene frequencies, occurs if there is a failure to reproduce or if individuals become isolated from the rest of their population?
mutation
radiation
genetic drift
nonrandom mating
Mutations are the raw material for evolutionary change, without mutations there could be no new variations among members of a population.
Group of answer choices
True or false
Which factors can prevent permanent fixation of an allele (i.e. maintain genetic diversity)?
Genetic Drift
Gene Flow
Natural Selection
Mutation
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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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
- Genetic variation _______. (Choose an answer.) 1. is created by the direct action of natural selection. 2. arises in response to changes in the environment. 3. must be present in a population before natural selection can act upon the population.arrow_forwardThe most important feature that enables a gene to act as a molecular clock is Group of answer choices: a recent origin by a gene duplication event a large number of base pairs in the genome being acted upon by natural selection a reliable average rate of mutationarrow_forwardMutations can be considered one of the raw materials of evolution because they cause mating to remain random. usually cause species to become extinct. contribute to new variations in organisms. are usually beneficial to the organism in which they appear.arrow_forward
- Which evolutionary process leads to environmental adaptations in a population? random mutations gene flow sexual selection natural selectionarrow_forwardWhile fish are traveling from salt to fresh water to spawn eggs, a landslide occurs and traps some of the fish in fresh water for a million years. The landslide is an effective mechanism for: geographical isolation migration artificial selection mutation breedingarrow_forwardWhat is the source of genetic variation in a population? Natural selection Mutation and sexual reproduction Adaptationarrow_forward
- At the edge of the Arctic Circle, owls prey on field mice. Occasionally, in a litter of white field mice, a brown mouse appears. Because of greenhouse warming, the snow melts, changing the environment to shades of brown. The adaptations which allow survival and reproduction of a certain color of mice in the new environment is due to: variation. lethal mutations. acquired traits. isolation.arrow_forwardWhat is a cline? a. the slope of a mountain where a population lives b. the degree to which a mutation helps an individual survive c. the number of individuals in the population d. gradual geographic variation across an ecological gradientarrow_forwardWhich factors can prevent permanent fixation of an allele (i.e. maintain genetic diversity)? Hint: You're going to have to try different values than just those presented in the exercise--try to keep both alleles present! Answer choices: Gene Flow Genetic Drift Natural Selection Mutationarrow_forward
- The change in the circled offspring’s genotype was caused by a mutation. A mutation is a change in a gene. Mutations happen when a mistake is made when a cell’s chromosomes are copied. How might mutations introduce variation into a population?arrow_forwardWhat is the gene pool? A part of a chromosome that encodes an RNA or protein product in its DNA sequence All of the alleles of all the genes in a population The abundance of a particular allele among members of a population Forms of a gene with slightly different DNA sequences that may encode slightly different versions of the gene's productarrow_forwardWhat is NOT true about mutations? Group of answer choices Without mutations, there would be no genetic variation Mutations are usually deleterious Mutations are a relatively weak force of evolution Mutations are always balanced with natural selectionarrow_forward
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