Biology: Concepts and Investigations
3rd Edition
ISBN: 9780073525549
Author: Mariëlle Hoefnagels Dr.
Publisher: McGraw-Hill Education
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Chapter 12, Problem 8MCQ
Summary Introduction
Introduction:
Gene flow causes movement of an allele from one place to the other. Gene flow occurs due to migration. Complete movement of an entire individual does not require during gene flow.
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Darwin based his Theory of Evolution by Natural Selection on series of observations. Which of the following is not associated with his theory?
a) individuals in a population vary phenotypically
b) organisms tend to under-reproduce themselves
c) there are limited resources for which individuals compete
d) some variations possessed by individuals of a population are inherited
Darwin emphasized that evolution via natural selection leads only to
a) progress as defined by increasing heterogeneity.
b) higher and lower forms within the same species of organism.
c) the establishment of some societies that are more civilized than others.
d) increasing adaptation between organisms and their given environment.
As a mechanism of evolution, natural selection can be most closely equated with a. random mating. b. genetic drift. c. unequal reproductive success. d. gene flow.
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 - Prob. 2MCCh. 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 - Prob. 3MCQCh. 12 - Prob. 4MCQCh. 12 - Prob. 5MCQCh. 12 - Prob. 6MCQCh. 12 - Prob. 7MCQCh. 12 - Prob. 8MCQCh. 12 - Prob. 9MCQCh. 12 - How did James Hutton, Georges Cuvier,...Ch. 12 - Explain how understanding evolution is important...Ch. 12 - How does variation arise in an asexually...Ch. 12 - Prob. 4WIOCh. 12 - Prob. 5WIOCh. 12 - Explain how harmful recessive alleles can persist...Ch. 12 - Fraggles are mythical, mouselike creatures that...Ch. 12 - Prob. 8WIOCh. 12 - Prob. 9WIOCh. 12 - Prob. 10WIOCh. 12 - Add the terms genotype, phenotype, allele...Ch. 12 - Prob. 3PIT
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- which of these is not a central rule of natural selection a, fitness to the general health and strength of an organism b, natural selection can only act on traits that affect reproduction c, natural selection can't occur without population variation d, a trait must be inherited if natural selection is to act on itarrow_forwardHow did Darwin support the idea that natural selection can produce evolutionary change? Group of answer choices A. he examined how humans produced domesticated plant and animal breeds B. he just thought it had to be true C. he invented a time machine to go back and check it out for himself D. he observed wild populations to see natural selection in actionarrow_forwardA farmer breeds sheep with the desired traits of disease resistance and tine wool. After several decades of breeding efforts, the farmer's flock is resistant to disease and produces fine wool. Which evolutionary mechanism is responsible for the changes in the gene pool of the farmer's flock? A:Sexual selection B:Artificial selection C:Natural selection D:Gene flowarrow_forward
- What does the term evolution mean? A. The characteristics of species become more complex over time. B. The strongest individuals produce the most offspring. C. The characteristics of an individual change through the course of its life, in response to natural selection. D. The characteristics of populations change through time.arrow_forwardWhich one of the four forces of evolution has the smallest effect on changing allele frequencies? a. Drift b. Gene flow c. Mutation d. Selectionarrow_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
- Evolution that results because certain genotypes have a higher reproductive success is based on a. genetic variation. c. genetic drift. b. natural selection. d. both a and b.arrow_forwardWhich of the following is not a trait on which natural selection can act? a size of ears b fur/hair color c broken bones d thickness of furarrow_forwardWhich of the following is true about adaptation? a) It occurs through the inheritance of acquired characteristics b) It always results in the evolution of new traits c) It is a result of chance mutations d) It is the result of natural selection acting on heritable variationarrow_forward
- Which of the following is NOT an essential component of Darwin's theory of natural selection? a) natural selection results in a population that is adapted to its environment b) use or disuse of a structure causes changes that are passed onto the next generation c) more offspring are produced than the environment can support d)heritable variation exists in populationsarrow_forwardWhich of the following statements is inaccurate? Multiple choice (one answer is correct) a.The genetic variation that occurs in a population from mutation is non-random b.Natural selection is the only mechanism that consistently causes adaptive evolution c.Evidence demonstrates that whales evolved from land-dwelling organisms d.Natural selection acts on populationsarrow_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) individuals will vary depending on geography and climate B) variation exists because not all genes will be expressed C) variation among individuals may arise as a result of mutations in the genetic code D) variation exists because different individuals will have different access to food and other resourcesarrow_forward
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