Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 24, Problem 3TYU
Summary Introduction
Introduction:
The punctuated equilibrium term refers to the time periods of apparent geological strata that appear in fossil records punctuated by the sudden change.
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According to the punctuated equilibria model,(A) given enough time, most existing species will branchgradually into new species.(B) most new species accumulate their unique features relatively rapidly as they come into existence, then changelittle for the rest of their duration as a species.(C) most evolution occurs in sympatric populations.(D) speciation is usually due to a single mutation.
Which of the evolutionary processes discussed in the material presented can introduce genetic variation into a population?
a) natural selection and genetic drift
b) mutation and gene flow
c) natural selection and nonrandom mating
d) mutation and genetic drift
compare and contrast between the following
a) allopatric speciation and sympatric speciation.
b) autopolyploid speciation and allopolyploid speciation
c) natural selection and sexual selection
Chapter 24 Solutions
Campbell Biology (10th Edition)
Ch. 24.1 - Prob. 1CCCh. 24.1 - WHAT IF? Suppose two bird species live in a...Ch. 24.2 - Summarize key differences between allopatric and...Ch. 24.2 - Prob. 2CCCh. 24.2 - WHAT IF? Is allopatric speciation more likely to...Ch. 24.2 - MAKE CONNECTIONS Review the process of meiosis in...Ch. 24.3 - 1. What are hybrid zones, and why can they be...Ch. 24.3 - WHAT IF? Consider two species that diverged while...Ch. 24.4 - Speciation can occur rapidly between diverging...Ch. 24.4 - Prob. 2CC
Ch. 24.4 - Prob. 3CCCh. 24 - Explain the role of gene flow in the biological...Ch. 24 - Can factors that cause sympatric speciation also...Ch. 24 - What factors can support the long-term stability...Ch. 24 - Is speciation something that happened only in the...Ch. 24 - The largest unit within which gene flow can...Ch. 24 - Prob. 2TYUCh. 24 - Prob. 3TYUCh. 24 - Prob. 4TYUCh. 24 - Which of the following factors would not...Ch. 24 - Plant species A has a diploid chromosome number of...Ch. 24 - Prob. 7TYUCh. 24 - SCIENTIFIC INQUIRY DRAW IT In this chapter, you...Ch. 24 - Prob. 9TYUCh. 24 - Prob. 10TYUCh. 24 - WRITE ABOUT A THEME: INFORMATION In sexually...Ch. 24 - Prob. 12TYU
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- Sometimes physical elements can prevent several of the individual composing an original population from mating with each other on a regular basis, eventually engendering different species. This process is called: Question 5 options: A) Gene flow. B) Genetic Drift. C) Speciation. D) Allopatric Speciation. E) Sympathetic speciation.arrow_forwardA species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring. Evolution is an important mechanism in the formation of new species. The evolution of a new species requires several components including all, BUT A) Evolution of a new species requires a long time. B) Evolution of a new species requires the need for a genetic change. C) Evolution of a new species requires a separation that prevents interbreeding. D) Evolution of a new species requires mutations that produce new genetic traits. not graded use photoarrow_forwardWhich of the following statements is false regarding lateralgene transfer?(a) It accelerates evolution by allowing rapid acquisition ofadaptive traits.(b) It has resulted in multiple ancestral origins for some or-ganisms.(c) Laterally transfered genes are unstable and tend to belost over time.(d) Organisms in one domain have acquired genes from or-ganisms in a different domain.(e) It complicates the process of determining evolutionaryrelatedness.arrow_forward
- 2) A species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring. Evolution is an important mechanism in the formation of new species. The evolution of a new species requires several components including all, BUT A) Evolution of a new species requires a long time. B) Evolution of a new species requires the need for a genetic change. C) Evolution of a new species requires a separation that prevents interbreeding. D) Evolution of a new species requires mutations that produce new genetic traits.arrow_forward2) A species is a group of individual organisms that interbreed and produce fertile, viable offspring. According to this definition, one species is distinguished from another when, in nature, it is not possible for matings between individuals from each species to produce fertile offspring. Evolution is an important mechanism in the formation of new species. The evolution of a new species requires several components including all, BUT A) Evolution of a new species requires a long time. B) Evolution of a new species requires the need for a genetic change. C) Evolution of a new species requires a separation that prevents interbreeding. D) Evolution of a new species requires mutations that produce new genetic traits. Not Gradedarrow_forwardAccording to Darwin’s model of evolution, evolution can only occur if there is some variation present among the individual members of a population. Which statement best describes the source of this variation among members of a species? A) variation exists because different individuals will have different access to food and other resources B) individuals will vary depending on geography and climate C) variation exists because not all genes will be affected D) variation among individuals may arise as a result of mutations in the genetic codearrow_forward
- Natural selection (a) leads to species being better adapted to their environment. (b) may lead to speciation if there is no gene flow between populations. (c) may lead to genetic divergence among populations in differing environments. (d) all of the above (e) none of the abovearrow_forward21) ALL BUT ONE of the statements below helps to describe gene flow. That is A) B) Without genetic variation, some of the basic mechanisms of evolutionary change cannot operate. There are three primary sources of genetic variation: 1. Mutations II. Gene flow III. Sexual reproduction D) It depends on a chance event that changes the gene pool. It can reduce the genetic differentiation between the two groups. It involves the movement of alleles from one population to another. It includes migration or the movement of individuals between populations. Some mutations always occur from generation to generation. But most mutations do not persist over time in the gene pool. Which mutation is MOST likely to become established and persist in a species?arrow_forwardEven though Hardy and Weinburg showed that the process of random reproduction will not alter gene frequency in a population over time, in wild populations we observe that gene frequencies do change overtime so what has happened? A) sexual selection B) Evolution due to sexual selection C) none of these D) any of these E) Evolution due to genetic driftarrow_forward
- 8) What data would suggest that a species evolutionary history includes sexual selection as a mechanism that helped shape the species? A) If males and females are significantly different from each other (sexual dimporphism) B) If some males reproduce with multiple females while other males do not reproduce C) If males engage in "risky" behavior D) If males and females form different social groups (i.e. herds are formed from either males or females but not both)arrow_forwardThe migration of breeding individuals between populations causes a corresponding movement of alleles, which is referred to as: a) mutation b) genetic drift c) gene flow d) random mating e) directional selection Question 58 (Mandatory) Which term indicates the evolution of many closely related species from one or a few ancestral species in a relatively short period of time? This is particularly noticeable on islands. Microevolution b) Communal radiation Adaptive radiation d) Preadaption e) Hyper speciation Darrow_forward1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed.arrow_forward
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Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License