Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 19, Problem 10TY
The micro-evolutionary factor most sensitive to
- mutation.
- migration.
- natural selection.
- genetic drift.
- all of the above.
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Which of the following terms are used to apply ONLY TO SELECTION, and never to just evolution. Choose all that apply. (1 or more are correct).
founder effect
fitness
allele frequencies
bottleneck effect
selective advantage/disadvantage
cost/benefit
Which 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 process
Which of the following statements about the forces that drive evolution is TRUE?
Unlike the other evolutionary forces, natural selection is the only force that improves the match between the organism and its environment.
Unlike the other evolutionary forces, gene flow is the only force that causes populations to become more different.
Unlike the other evolutionary forces, mutation is the only force that decreases genetic variability.
Unlike the other evolutionary forces, nonrandom mating is the only force that changes allele frequency.
Chapter 19 Solutions
Principles of Biology
Ch. 19.1 - Prob. 1TYKCh. 19.1 - Prob. 2TYKCh. 19.1 - The phrase an organism evolves is incorrect....Ch. 19.1 - Prob. 1BCCh. 19.2 - Explain how geography played a key role in the...Ch. 19.2 - Prob. 2CCCh. 19.2 - Prob. 3CCCh. 19.2 - Prob. 1TYKCh. 19.2 - Homologous traits show similarities because the...Ch. 19.3 - What is the frequency of pink flowers in a...
Ch. 19.3 - Prob. 1TYKCh. 19.3 - Prob. 2TYKCh. 19.4 - Lets suppose the climate on an island abruptly...Ch. 19.4 - Prob. 2CCCh. 19.4 - Prob. 3CCCh. 19.4 - Prob. 4CCCh. 19.4 - Prob. 1TYKCh. 19.4 - Prob. 2TYKCh. 19.4 - Prob. 3TYKCh. 19.5 - How does the bottleneck effect undermine the...Ch. 19.5 - Prob. 1TYKCh. 19.5 - Prob. 2TYKCh. 19.5 - Prob. 1BCCh. 19.6 - How does migration affect the genetic compositions...Ch. 19.6 - Prob. 1BCCh. 19.6 - Prob. 1TYKCh. 19.6 - Populations that experience inbreeding may also...Ch. 19 - Prob. 1TYCh. 19 - An evolutionary change in which a population of...Ch. 19 - Homology occurs because different species occupy...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Prob. 8TYCh. 19 - Prob. 9TYCh. 19 - The micro-evolutionary factor most sensitive to...Ch. 19 - Prob. 1CCQCh. 19 - Prob. 2CCQCh. 19 - A principle of biology is that populations of...Ch. 19 - Prob. 1CBQCh. 19 - Prob. 2CBQ
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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 drift often occurs when there is a founder event because Because the founding population is usually composed of individuals with greater fitness (like strength) than individuals in the original population. Because the founding population is almost never a perfectly random sample of the original population. Because the founding population usually experiences high mortality during the founding event. Because the founding population usually experiences very different selection than the original population.arrow_forwardGodfrey 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 choicesarrow_forwardNatural selection can be defined as: chance differences in organism traits. the chance for species numbers to increase rapidly. the processes that lead individuals to resemble their parents. the differential survival and reproduction of individuals. the genetic fixation of species.arrow_forward
- What is variation in evolution-if heterozygosity is reduced,what happens to the potential for evolution?the phenotype(genotype)of the population is due to the mosaic of random and directed processes.some of these have to do with history.some related to adaptation etc.as completely as possible discuss the role of the chance and direction in variation in evolution and in determinijg the phenotype of a populationarrow_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_forwardWhich of the following is NOT one of the four factors that contributes to evolution by producing and redistributing genetic variation (or contributes to microevolution as calculated by the Hardy-Weinberg equilibrium)? Group of answer choices Acclimatization Gene flow Genetic drift Recombination Mutationarrow_forward
- The founder effect is related to genetic drift, and the bottleneck effect is related to genetic drift. assortative mating. mutation. selection.arrow_forwardThe offspring of better-adapted individuals are expected to make up a larger proportion of the next generation. Which mechanism of evolution best explains this event? Group of answer choices gene flow and genetic drift mutations and genetic drift mutations and nonrandom mating mutations and natural selectionarrow_forwardWhich one of the following statements best describes the difference between mutation and substitution in a population? Mutation is the origin of a new allele in an individual organism, and substitution is the evolutionary replacement of one allele by another. Mutation is the origin of a deleterious allele, and substitution is the increase in frequency of an advantageous allele by positive selection. Mutation is change in the DNA sequence within a functional gene, and substitution involves nucleotide changes in noncoding regions of the genome.arrow_forward
- List the premises of evolution by natural selection. What is the inevitable outcome?Variation; heritability; “struggle”/context; differential survival/reproductionarrow_forwardNatural selection causes a shift in gene frequencies. What type of shift due to natural selection is represented here? Describe that type of natural selection and which data on these graphs support it. Chose one other type of selection and provide an example of how it is different from these graphs. Average 30 8.8 9.3 9.8 10.3 10.8 11.3 Beak depth Number of medium ground finches 25 20 15- 10 5 0 7.3 7.8 8.3arrow_forwardWhat causes variation among a population of living things and How can variation in one generation influence the next generation? Is the variation in a population will be examined as the “raw material” upon which natural selection acts. Why are there so many different kinds of living things? Comparing species that exist today reveals a lot about their relationships to one another and provides evidence of common origins. This session explores the theory of evolution: change in species over time.arrow_forward
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