Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 20.3, Problem 3R
Summary Introduction
To review:
The possible reason for the deviation of the genotypic or
Introduction:
The Hardy–Weinberg principle suggests that the genotypic frequency remains constant unless the population is acted upon by the evolutionary forces. Based on the principle, there are two equations, which can be used to calculate the genotypic and the allele frequency in a population. These equations are based on the Hardy–Weinberg equilibrium.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
I'm confused about how I would figure out these two questions as I don't really understand the difference or where to start. What would genotypic frequencies be for Wildrose at pt-8 if it were in equilibrium? and How many individuals (to 2 decimal places) of each genotype would there be from Wildrose at pt-8 if it were in equilibrium?
The next several questions refer to the data given in this problem.
You sample a population of leafhoppers and genotype 250 individuals at a polymorphic locus with two alleles. You obtain the following numbers:
AA = 68 individuals
Aa = 54 individuals
aa = 128 individuals
what is the expected frequency with the aa genotype if the population is in hardy weinberg equilibrium (you may round your answer to the nearest whole number)
Which of the following statements is supported, based on the data? (Check all that apply)
1.) The population is in Hardy-Weinberg equilibrium.
2.) The population is not in Hardy-Weinberg equilibrium, and the cause may be inbreeding.
3.) The population is not in Hardy-Weinberg equilibrium, and the cause may be selection favoring heterozygotes.
4.) The population is not in Hardy-Weinberg equibrium, and the cause may be population structure (in other words, the population we sampled actually may actually consist of two or more subpopulations that are at least…
Suppose the frequency of the recessive allele a for the recessive condition albinism is 0.2
Assume the Hardy-Weinberg distribution.
What is the frequency of albinism in the general population?
What fraction of the population are carriers?
Chapter 20 Solutions
Life: The Science of Biology
Knowledge Booster
Learn more about
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
- In the F2 generation, 306 rabbits with red eyes and 71 with a white eye phenotype suppose the calculated x2 value is 0.35. Find the x2 range using the distribution chart. What is the p-value range? using these information do you accept or reject the null hypothesis? The distribution chart is attached below.arrow_forwardIn a large population of squirrels, 0.14 have the recessive genetic condition nlourianfilindr (fictional). Assume the Hardy-Weinberg distribution. What is the frequency of the dominant allele in this population? Giver your answer with two digits parts the decimal point.arrow_forwardIn a human population of 1000, 840 are tongue rollers (360 TT and 480 Tt), and 160 are not tongue rollers (tt). What is the frequency of the dominantallele (T) in the population?arrow_forward
- You sample a fruit fly (Drosophila melanogaster) population for the alcohol dehydrogenase (Adh) gene. There are two alleles, designated A₁ and A2, for this locus in this population. The data you collected is shown in this table (this is your observed data). Is this population in Hardy-Weinberg equilibrium at this locus? To save you time, I have calculated the expected number of individuals for each genotype and included them in the table. For your answer, you should provide: • an answer to the question: Is this population in Hardy-Weinberg equilibrium for this locus? • the value of your chi-square result you based this answer on (you do not have to show your calculations for the homework, but you would on an exam) • (if you say the population is NOT in HW equilibrium) an evaluation of which genotype(s) are more or less common than expected in the observed population # individuals genotype A₁A₁ # individuals genotype A₁A2 # individuals genotype A₂A2 154 117 Observed data Expected data…arrow_forwardYou perform a chi-square test to compare observed and expected values and obtain a chi-square value of 9.4 with 3 degrees of freedom. What do you conclude? it is not likely that the difference between observed and expected values is due to random chance, since p>0.05 it is impossible to conclude anything from this information it is likely that the difference between observed and expected values is due to random chance, since p>0.05 it is likely that the difference between observed and expected values is due to random chance, since p<0.05 the experiment was done incorrectly and must be repeated it is not likely that the difference between observed and expected values is due to random chance, since p<0.05arrow_forwardA 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_forward
- A large, random mating population is started with thefollowing proportion of individuals for the indicatedblood types:0.5 MM0.2 MN0.3 NNThis blood type gene is autosomal, and the M and Nalleles are codominant.a. Is this population at Hardy-Weinberg equilibrium?b. What will be the allele and genotype frequenciesafter one generation under the conditions assumedfor Hardy-Weinberg equilibrium?c. What will be the allele and genotype frequenciesafter two generations under the conditions assumedfor Hardy-Weinberg equilibrium?arrow_forwardThe calculated chi-square value which is 0 is less than the critical value which is 5.991 (under the degree of freedom 2). What is the probability of the computed chi-square value? And is it part of the population in Hardy-Weinberg equilibrium?arrow_forwardIf the chi-square value is 0 under the degree of freedom 1. What could be the interpretation and does it fit in the population of Hardy-Weinberg equilibrium?arrow_forward
- The following data for the genotypes at the alcohol dehydrogenase locus were observed from a sample of Drosophila melanogaster. Sample size 1000 FF 550 FF=0.55; FS=0.34; SS=0.11 O F-0.72; S=0.28 FF=0.078; FS=0.40; SS=0.52 FS What are the Hardy-Weinberg equilibrium genotype frequencies for each genotype based upon this sample? OFF=0.52; FS=0.40; SS=0.078 340 SS 110arrow_forwardIf you survey the genotype frequencies at locus E, which has alleles E (frequency =p) and e (frequency=q), and find that p2 + 2pq + q2 is much greater than 1, you can confidently conclude that Group of answer choices you made a math error the allele frequencies must also sum to greater than 1 the population is not at HWE with respect to locus E the population is not at HWE with respect to any lociarrow_forwardConsider a population in which the D locus has two alleles, D and d, with f(D) = 0.6 and f(d) = 0.4. What are the genotypic frequencies expected under Hardy-Weinberg equilibrium?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Mendelian Genetics and Punnett Squares; Author: Professor Dave Explains;https://www.youtube.com/watch?v=3f_eisNPpnc;License: Standard YouTube License, CC-BY
The Evolution of Populations: Natural Selection, Genetic Drift, and Gene Flow; Author: Professor Dave Explains;https://www.youtube.com/watch?v=SRWXEMlI0_U;License: Standard YouTube License, CC-BY