Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 23, Problem 4IQ
Practice using the Hardy-Weinberg equation so that you can easily determine genotype frequencies from allele frequencies, and vice versa.
- a. The allele frequencies in a population are A = 0.6 and a = 0.4. Predict the genotype frequencies for the next generation.
AA ____ Aa ____ aa ____
- b. What would the allele frequencies be for the generation you predicted in part a?
A ____ a ____
- c. Suppose you are able to determine the actual genotype frequencies in the population and find that these frequencies differ significantly from what you predicted in part a. What would such results indicate?
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
A) Explain why we use the concept of Hardy-Weinberg Equilibrium if populations are never stable?
B) What do the mathematical results tell us if the allele frequencies do not match our predictions?
(In other words, if you have extra spotted fish in a generation, what has happened?)
10,000 individuals are sampled from a population and are found to display one of three blood types: AA with 6800 individuals, AB with 2800 individuals and type BB with 400 individuals.
a) What is the frequency of each genotype in the population?
b) What is the frequency of the A allele?
c) What is the frequency of the B allele?
d) If the next generation contains 25,000 individuals, how many would have blood type BB, assuming the population is in Hardy-Weinberg Equilibrium?
Assuming a population is in Hardy-Weinberg equilibrium, an increase in the frequency of the p(A) allele from 0.6 to 0.9 would result in which of the following outcomes?
a.
A decrease in the number of homozygous dominant individuals within the population
b.
A decrease in the number of homozygous recessive individuals within the population
c.
An increase in the number of homozygous recessive individuals within the population
d.
An increase in the number of heterozygotes within the population
e.
No change in genotypic frequency within the population
Chapter 23 Solutions
Study Guide for Campbell Biology
Ch. 23 - a. What is a major source of genetic variation for...Ch. 23 - In a population of 200 mice, 98 are homozygous...Ch. 23 - Use the allele frequencies you determined in...Ch. 23 - Practice using the Hardy-Weinberg equation so that...Ch. 23 - Prob. 5IQCh. 23 - Why hasnt the highly deleterious sickle-cell...Ch. 23 - a. What is Hardy-Weinberg equilibrium? b. Define...Ch. 23 - Prob. 2SYKCh. 23 - Prob. 1TYKCh. 23 - Prob. 2TYK
Ch. 23 - Prob. 3TYKCh. 23 - Prob. 4TYKCh. 23 - Mice have an estimated 1,000 olfactory receptor...Ch. 23 - Prob. 6TYKCh. 23 - If a population has the following genotype...Ch. 23 - In a population with two alleles, B and b, the...Ch. 23 - Prob. 9TYKCh. 23 - Prob. 10TYKCh. 23 - In a random sample of a population of shorthorn...Ch. 23 - Genetic drift is likely to be seen in a population...Ch. 23 - Porphyria variegata is a genetic disease...Ch. 23 - Cystic fibrosis is a very serious genetic disorder...Ch. 23 - Prob. 15TYKCh. 23 - Prob. 16TYKCh. 23 - Prob. 17TYKCh. 23 - Prob. 18TYKCh. 23 - Prob. 19TYKCh. 23 - Prob. 20TYKCh. 23 - Prob. 21TYK
Additional Science Textbook Solutions
Find more solutions based on key concepts
Identify each of the following reproductive barriers as prezygotic or postzygotic. a. One lilac species lives o...
Campbell Essential Biology with Physiology (6th Edition)
11. In the early 1800s, French naturalist Jean Baptiste Lamarck suggested that the best explanation for the rel...
Campbell Biology: Concepts & Connections (9th Edition)
How does trandlation differ from transcription?
Microbiology: Principles and Explorations
Define histology.
Fundamentals of Anatomy & Physiology (11th Edition)
A student moving out of a dormitory crouches in correct fashion to lift a heavy box of books. What prime movers...
HUMAN ANATOMY
Some species of bacteria that live at the surface of sediment on the bottom of lakes are capable of using eithe...
Biology: Life on Earth with Physiology (11th Edition)
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 horses, tobiano is a white spotting pattern. The tobiano allele (T) is dominant over the non-tobiano (t) allele. In an ideal horse population exhibiting Hardy–Weinberg equilibrium, 325 horses out of 500 are non-tobiano. a. Calculate the number of homozygous dominant tobiano horses. Answer b. Calculate the number of heterozygous horses. Answer c. Calculate the number of tobiano horses in the population. Answer Express your answer rounded to the nearest whole number.arrow_forwardA population of squid has 50 AA individuals, 20 Aa individuals, and 30 aa individuals. (a) Calculate the observed f(A) and f(a) for this population. Show your work and clearly indicate your final answers. (b) Calculate the observed f(AA), f(Aa), and f(aa) for this population. Show your work and clearly indicate your final answers. (c) Calculate the expected genotype frequencies if the population is in Hardy-Weinberg equilibrium. Show your work and clearly indicate your final answers. (d) Does this population appear to be in Hardy-Weinberg equilibrium? Why or why not? Be specific in your explanation.arrow_forwardBelow are individuals in a population broken down by genotype. (A) Complete the table AA Aa aa Total # individuals 305 650 55 # A alleles # a alleles (B) Determine the frequency of alleles A and a. Show your work. (C) Assuming the population is in Hardy-Weinberg equilibrium, determine the number of heterozygous individuals in the next generation with a population of 1200.arrow_forward
- A researcher examines a locus, or marker, in which there is a particular C/T polymorphism in a population of interest. Let’s call this Locus 1. They obtain the following genotype counts in a sample of the population: CC:42, CT:16, TT:32. a) Calculate the genotype frequencies and the allele frequencies for Locus 1 in the sample.b) Calculate the observed heterozygosity (the frequency of heterozygotes) and the observed homozygosity (the total frequency of all homozygotes) in the sample. Ensure that these two frequencies add up to 1.arrow_forwardAssume you have a population with alleles A and a at a genetic locus. You measured the population and found 30 AA homozygotes, 100 Aa heterozygotes, and 70 aa homozygotes. What is the frequency of A and a in the population? a. A = 0.3; a = 0.7 b. A = 0.7; a = 0.3 c. A = 0.4; a = 0.6 d. A = 0.6; a = 0.4arrow_forwardIn a population that is in Hardy-Weinberg equilibrium, there are two possible alleles for a certain gene, A and a. If the frequency of allele A is 0.4, what fraction of the population is heterozygous? O A. 0.40 B. 0.60 C. 0.16 D. 0.48arrow_forward
- In a population of mountain lions, 9% of the individuals suffer from a disease caused by a recessive allele (aa). A) Calculate the frequency of both the dominant and recessive alleles. B) What is the percentage of homozygous dominant individuals and what is the percentage of heterozygous individuals in the population?arrow_forwardThe MN blood group is of interest to population geneticists because (a) people with genotype MN cannot receive blood transfusions from either MM or NN people (b) the MM, MN, and NN genotype frequencies can be observed directly and compared with calculated expected frequencies (c) the M allele is dominant to the N allele (d) people with the MN genotype exhibit frequency-dependent selection (e) people with the MN genotype exhibit heterozygote advantagearrow_forwardINTERPRET DATA In 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
- A laboratory in British Columbia, the Kelatavicla lab, starts a mouse population where the frequency of the R allele is 0.5. You maintain this population for many years under the conditions found in column A. Given the information in the table (column A) and the information above it, predict what you think will happen to the frequency of the R allele. A) The frequency of the R allele will remain stable. B) The frequency of the R allele will increase. C) The frequency of the R allele will decrease.arrow_forwardConsidering the Hardy-Weinberg theorem’s assumptions, which of the following statements is NOT correct? (Recall that there are certain assumptions that must be true in order for the Hardy-Weinberg theorem to accurately predict genotype ratios in the next generation.)a) The population must be very large so there random genetic drift will not occur.b) No natural selection can occur.c) Mating must be random.d) Individuals must migrate into and out of the population so that gene flow will occur.e) Mutations must not occur.arrow_forwardConsider a set of genotypes with fitnesses: AA = 1.12 Aa = 1.04 aa = 1.0 Where the frequency of the "A" allele is 0.4. A. What is delta p, the change in the allele frequency to the next generation? B. What is the new frequency of the "A" allele after one generation of selection? (Note: provide both values to the nearest 0.0001)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
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