Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 19.4, Problem 2C
Summary Introduction
To explain: The effect of frequency-dependent selection on
Introduction: Balanced polymorphism is a type of genetic polymorphism caused by persistence of two or more allele in population over generations. In balanced polymorphism, the genetic variation is maintained by heterozygote advantage and frequency-dependent selection.
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Chapter 19 Solutions
Biology (MindTap Course List)
Ch. 19.1 - Define what is meant by a populations gene pool.Ch. 19.1 - Distinguish among genotype, phenotype, and allele...Ch. 19.1 - Prob. 1CCh. 19.1 - Can the frequencies of all genotypes in a...Ch. 19.1 - INTERPRET DATA In a human population of 1000, 840...Ch. 19.2 - Discuss the significance of the HardyWeinberg...Ch. 19.2 - Prob. 4LOCh. 19.2 - INTERPRET DATA In a population at genetic...Ch. 19.2 - INTERPRET DATA In a population at genetic...Ch. 19.2 - INTERPRET DATA The genotype frequencies of a...
Ch. 19.3 - Prob. 5LOCh. 19.3 - Discuss how each of the following...Ch. 19.3 - Distinguish among stabilizing selection,...Ch. 19.3 - Which microevolutionary force leads to adaptive...Ch. 19.3 - Why is mutation important to evolution if it is...Ch. 19.3 - Which microevolutionary forces are most associated...Ch. 19.3 - Prob. 4CCh. 19.4 - Prob. 8LOCh. 19.4 - Prob. 1CCh. 19.4 - Prob. 2CCh. 19.4 - How can researchers test the hypothesis that...Ch. 19 - The genetic description of an individual is its...Ch. 19 - In a diploid species, each individual possesses...Ch. 19 - The MN blood group is of interest to population...Ch. 19 - If a populations allele and genotype frequencies...Ch. 19 - Prob. 5TYUCh. 19 - The continued presence of the allele that causes...Ch. 19 - According to the HardyWeinberg principle, (a)...Ch. 19 - Prob. 8TYUCh. 19 - Mutation (a) leads to adaptive evolutionary change...Ch. 19 - Which of the following is not true of natural...Ch. 19 - If all copies of a given locus have the same...Ch. 19 - Prob. 12TYUCh. 19 - EVOLUTION LINK Given that mutations are almost...Ch. 19 - Prob. 14TYUCh. 19 - Prob. 15TYUCh. 19 - EVOLUTION LINK Evolution is sometimes...Ch. 19 - INTERPRET DATA The recessive allele that causes...Ch. 19 - PREDICT You study males in populations of a...Ch. 19 - Prob. 19TYU
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- Why is population level genetic variation important for evolution and what causes genetic variation ? How do we detect if evolution is occurring ?arrow_forwardIs natural selection working mainly in the phenotype or the genotype? Are the individuals or the population evolving?arrow_forwardMechanisms for the persistence of genetic variation in a population include:i) antagonistic selection, ii) overdominance, iii) heterosis, iv) inverse-frequency-dependent selection, and v) mutation-selection balance. Describe how mutation-selection balance can act to maintain genetic variation in a population.arrow_forward
- What are considered significant factors in maintaining the surprisinglyhigh levels of genetic variation in natural populations ?arrow_forwardHow does natural selection affect gene frequency over timearrow_forwardA mutation produces a new beneficial dominant allele. Which of the following statements is false when considering the rate of frequency change that will be observed for this allele in the population? a) The allele will initially be present in heterozygotes. b) It is less likely to reach frequency of 1.0 than if it had been recessive. c) Its frequency will increase slowly until homozygotes occur in the population. d) Individuals with this allele will express the favorable phenotype.arrow_forward
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