Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 27, Problem 13CONQ
Summary Introduction
To review:
The intuitive definition of mean fitness of a population and change of its value in response to natural selection
Introduction:
The ability of an organism to survive as well as reproduce measures the fitness of that organism. The measure of fitness determines the size of the genetic contribution to the next generation. The evolutionary fitness of an organism is determined by natural selection theory.
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Chapter 27 Solutions
Genetics: Analysis and Principles
Ch. 27.1 - A gene pool is a. all of the genes in a single...Ch. 27.1 - 2. In natural populations, most genes...Ch. 27.1 - A gene exists in two alleles designatedDandd. If...Ch. 27.1 - Prob. 4COMQCh. 27.2 - Which of the following is a factor that, by...Ch. 27.3 - 1. Darwinian fitness is a measure...Ch. 27.3 - 2. Within a particular population, darkly colored...Ch. 27.3 - 3. A population occupies heterogeneous...Ch. 27.3 - Prob. 4COMQCh. 27.4 - 1. Genetic drift is
a. a change in allele...
Ch. 27.4 - 2. Which of the following influences on genetic...Ch. 27.5 - Gene flow depends on a. migration. b. the ability...Ch. 27.6 - 1. Inbreeding is sexual reproduction between...Ch. 27.7 - The mutation rate is a. the likelihood that a new...Ch. 27.7 - 2. The transfer of an antibiotic resistance gene...Ch. 27.7 - Prob. 3COMQCh. 27 - 1. What is the gene pool? How is a gene pool...Ch. 27 - Prob. 2CONQCh. 27 - Prob. 3CONQCh. 27 - Prob. 4CONQCh. 27 - The termpolymorphismcan refer to both genes and...Ch. 27 - Prob. 6CONQCh. 27 - For a gene existing in two alleles, what are the...Ch. 27 - 8. In a population, the frequencies of two...Ch. 27 - The ability to roll your tongue is inherited as a...Ch. 27 - What evolutionary factors can cause allele...Ch. 27 - What is the difference between a neutral and an...Ch. 27 - Prob. 12CONQCh. 27 - Prob. 13CONQCh. 27 - Describe the similarities and differences among...Ch. 27 - 15. Is each of the following examples due to...Ch. 27 - Prob. 16CONQCh. 27 - Prob. 17CONQCh. 27 - 18. A group of four birds flies to a new location...Ch. 27 - 19. Describe what happens to allele frequencies as...Ch. 27 - With regard to genetic drift, are the following...Ch. 27 - When two populations frequently intermix due to...Ch. 27 - Two populations of antelope are separated by a...Ch. 27 - Prob. 23CONQCh. 27 - 24. Using the pedigree shown here, answer the...Ch. 27 - A family pedigree is shown here. A. What is the...Ch. 27 - 26. A family pedigree is shown here.
A. What is...Ch. 27 - Prob. 27CONQCh. 27 - Prob. 28CONQCh. 27 - 1. You will need to be familiar with the...Ch. 27 - You will need to refer to question 2 in More...Ch. 27 - Prob. 3EQCh. 27 - Prob. 4EQCh. 27 - You will need to refer to question 2 in More...Ch. 27 - Prob. 6EQCh. 27 - Prob. 7EQCh. 27 - In the Grants study of the medium ground finch, do...Ch. 27 - 9. A recessive lethal allele has achieved a...Ch. 27 - Among a large population of 2 million gray...Ch. 27 - In a donor population, the allele frequencies for...Ch. 27 - Prob. 12EQCh. 27 - Prob. 13EQCh. 27 - Prob. 14EQCh. 27 - 15. What would you expect to be the minimum...Ch. 27 - Discuss examples of positive and negative...Ch. 27 - Discuss the role of mutation in the origin of...Ch. 27 - Prob. 3QSDC
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- How Can We Measure Allele Frequencies in Populations? The MN blood group is a single-gene, two-allele system in which each allele is codominant. Why are such codominant alleles ideal for studies of allele frequencies in a population?arrow_forwardHow Can We Measure Allele Frequencies in Populations? Drawing on your newly acquired understanding of the HardyWeinberg equilibrium law, point out why the following statement is erroneous: Because most of the people in Sweden have blond hair and blue eyes, the genes for blond hair and blue eyes must be dominant in that population.arrow_forwardHow does population size affect the likelihood of changes in allele frequencies by chance alone? Can significant changes in allele frequencies (that is, evolution) occur as a result of genetic drift?arrow_forward
- Under what scenaries is genetic drift most potent as an evolutionary process? how do factors like population size and initial allele frequences affect likelihood of an allele being lost from a population (or becoming fixed)?arrow_forwardIn general, what is the effect of complete selection, migration and random genetic drift on the gene frequencies of the population? b. migrationarrow_forwardIf there are two alleles, A and a, in a population and the population is at Hardy–Weinberg equilibrium, what frequency of A would produce the greatest frequency of heterozygotes?arrow_forward
- What is the Evidence That Populations Evolve by Natural Selection?arrow_forwardIn a population that is in Hardy-Weinberg equilibrium there is a gene that has only two alleles. If the dominant gene accounts for 70% of the gene pool, what percentage of the population is heterozygous for the trait?arrow_forwardyou (should have) learned that selection alone cannot purge a population of the very last copy of a deleterious allele. If selection is unable to do so, which of the remaining mechanisms (of the five Hardy-Weinberg) assumptions is MOST LIKELY to do so? Justify your answer. That is, why is the mechanism you picked the most likely to get rid of that last copy of a harmful allele?arrow_forward
- If 80% of a population has a heterozy gous phenotype, and 16% of that population shows a recessive phenotype, is that population in Hardy - Weinberg equilibrium? In other words, does the population obey the rules of H - W? Perform a statistical analysis to determine your final answer.arrow_forwardIf allele frequencies do not change from one generation to the next, is the population definitely in Hardy-Weinberg equilibrium? Why or why not?arrow_forwardWhy is variation in heritable traits essential to the evolution of a population?arrow_forward
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