Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 21.2, Problem 2CC
The frequency of allele a is 0.45 for a population in Hardy-Weinberg equilibrium. What are the expected frequencies of genotypes AA, Aa, and aa?
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Chapter 21 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 21.1 - Explain why genetic variation within a population...Ch. 21.1 - Of all the mutations that occur in a population,...Ch. 21.1 - Prob. 3CCCh. 21.2 - A population has 700 individuals, 85 of genotype...Ch. 21.2 - The frequency of allele a is 0.45 for a population...Ch. 21.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 21.3 - In what sense is natural selection more...Ch. 21.3 - Distinguish genetic drift from gene flow in terms...Ch. 21.3 - WHAT IF? Suppose two plant populations exchange...Ch. 21.4 - What is the relative fitness of a sterile mule?...
Ch. 21.4 - Explain why natural selection is the only...Ch. 21.4 - Prob. 3CCCh. 21 - Natural selection changes allele frequencies...Ch. 21 - No two people are genetically identical, except...Ch. 21 - Sparrows With average-sized w1ngs survive severe...Ch. 21 - If the nucleotide variability of a locus equals...Ch. 21 - There are 25 individuals in population 1, all with...Ch. 21 - A fruit fly population has a gene with two...Ch. 21 - FOCUS ON EVOLUTION Using at least TWO examples,...Ch. 21 - Prob. 9TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
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- How 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_forwardConsider a Hardy-Weinburg Equilibrium population with an autosomal locus of 2 alleles, A1 and A2. If P(A1A2) = 8 * P(A1A1), what are the allele frequencies at the locus?arrow_forwardConsider an autosomal locus with alleles A and a. If the the allele frequencies are as follows Freq(A) = 0.4, Freq(a) = 0.6. , then what is the predicted frequency of heterozygous Aa individuals, assuming the population is in Hardy-Weinberg equilibrium? Freq(Aa) = ? Enter a number between 0 and 1, inclusive, for example 0.33arrow_forward
- A population of dragons is as follows: 46 are green with genotype GG 106 are green with genotype Gg 56 are red with genotype gg Is this population in Hardy-Weinberg equilibrium? Assume 1 degree of freedom for your chi-square test.arrow_forwardthe frequency of allele a is 0.45 for a population inhardy-Weinberg equilibrium. What are the expectedfrequencies of genotypes AA, Aa, and aa?arrow_forwardA population has the following genotype frequencies AA=0.3844, Aa=0.4712, aa=0.1444. Assuming Hardy-Weinberg equilibrium, what are the allele frequencies in the population?arrow_forward
- at what allelic frequency is the heterozygous genotype twice as frequent as the homozygous genotype in a population when in Hardy-Weinberg equilibrium?arrow_forwardThe frequency of the A allele is represented by p, while the a allele is represented by q. At hardy-weinburg equilibrium, what is the frequency of the Aa genotype?arrow_forwardIn a human population, the following data were obtained for numbers of people with each blood type (for 3 alleles, use 3 variables p,q, and r ; Hardy-Weinburg equation becomes (p^2 + q^2 + r^2 +2pq + 2pr + 2qr = 1):Type O – 804Type A – 997Type B – 295Type AB – 177Is this population in Hardy-Weinberg equilibrium? Explain.arrow_forward
- The frequency of the A1 allele is p = 0.4, and that of the A2 allele is q = 0.6. The observed genotype frequencies are as follows: f(A1A1) = 0.25 f(A1A2) = 0.36 f(A2A2) = 0.39 Is there a Hardy-Weinberg equilibrium in the population?arrow_forwardAn autosomal locus has alleles A and a. The allele frequencies in a population at Hardy Weinberg equilibrium are p = Freq(A) = 0.5 q = Freq(a) = 0.5 What is the frequency of homozygous wild-type (AA) in this population? Enter a single number between 0 and 1, for example, 0.33arrow_forwardAn autosomal locus has alleles A and a. The allele frequencies in a population at Hardy Weinberg equilibrium are p = Freq(A) = 0.1 q = Freq(a) = 0.9 What is frequency of heterozygotes in this population? Enter a single number between 0 and 1, for example 0.33arrow_forward
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