Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 21.2, Problem 1SB
Summary Introduction
To review:
The difference between the genotype frequencies and the allele frequencies in a population.
Introduction:
Each individual in a population has its own genotype. The sum of all gene copies of all the individuals in a population is called the gene pool. Genotypes in a sample are identified to describe the structure of a gene pool. The percentage of individuals possessing each genotype represents gene frequency.
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Chapter 21 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 21.1 - If a population of skunks includes some...Ch. 21.1 - Prob. 2SBCh. 21.1 - What factors contribute to phenotypic variation in...Ch. 21.2 - Prob. 1SBCh. 21.2 - Why is the Hardy-Weinberg principle considered a...Ch. 21.2 - Prob. 3SBCh. 21.3 - Which agents of microevolution tend to increase...Ch. 21.3 - Which mode of natural selection increases the...Ch. 21.3 - In what way is sexual selection like directional...Ch. 21.4 - How does the diploid condition protect harmful...
Ch. 21.4 - Prob. 2SBCh. 21.4 - Prob. 3SBCh. 21.5 - How can a biologist test whether a trait is...Ch. 21.5 - Why are most organisms adapted to the environments...Ch. 21 - The reason spontaneous mutations do not have an...Ch. 21 - The phenomenon in which chance events cause...Ch. 21 - Prob. 3TYKCh. 21 - Prob. 4TYKCh. 21 - Prob. 5TYKCh. 21 - Which of the following represents an example of...Ch. 21 - A population of mice is at HardyWeinberg...Ch. 21 - If the genotype frequencies in a population are...Ch. 21 - An Eastern European immigrant carrying the allele...Ch. 21 - If a storm kills many small sparrows in a...Ch. 21 - Prob. 11TYKCh. 21 - Discuss Concepts Many human diseases are caused by...Ch. 21 - Prob. 13TYKCh. 21 - Apply Evolutionary Thinking Captive breeding...Ch. 21 - Prob. 15TYKCh. 21 - Design an experiment to test the hypothesis that...Ch. 21 - Peter and Rosemary Grant of Princeton University...
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- How Can We Measure Allele Frequencies in Populations? What are four assumptions of the HardyWeinberg law?arrow_forwarda population has 700 individuals, 85 of genotype AA, 320of genotype Aa, and 295 of genotype aa. What are thefrequencies of alleles A and a?arrow_forwardIn a population the homozygous dominant individuals (AA) made up 49% of the population, while heterozygous ones (Aa) made up 42%, and recessive (aa) made up 9%. What are the frequencies of the A and a alleles?arrow_forward
- What Causes Random Changes in Allele Frequency ?arrow_forwardA population is made up of individuals where 77 have the A1A1 genotype, 65 have the A1A2 genotype, and 123 have the A2A2 genotype. What is the allele frequency of A1? Answer to 2 decimal places.arrow_forwardIn a population the homozygous dominant individuals made up 70% of the population, while heterozygous ones made up 21%, and recessive made up 9%. What are the frequencies of the A and a alleles?arrow_forward
- What is allele frequency?arrow_forwardIf in a population there are 37 individuals with genotype RR, 50 Rr individuals, and 13 rr individuals, what is the allele frequency of r in the population?arrow_forwardIn a population of 200 people, an allele F has a frequency of 84%. What is the frequency of allele f? Using the Hardy-Weinberg equation, estimate the numbers of homozygous dominant, heterozygous, and homozygous recessive genotypes. (Remember that the formula is: p2 + 2pq + q2 = 1, where p represents the dominant allele and q represents the recessive allele.) *Be sure to account for all 200 people in the population.arrow_forward
- A particular deer population has 50 M individuals, 30 MN individuals, and 70 N individuals. What are the allele frequencies?arrow_forwardIf the frequency of an allele at a locus of interest is 0.57, and we know there are only two alleles at this locus, what must be the frequency of the other allele?arrow_forwardIn a population at genetic equilibrium, the frequency of the homozygous recessive genotype (tt) is 0.16. What are the allele frequencies of T and t, and what are the expected frequencies of the TT and Tt genotypes?arrow_forward
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