Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 27.1, Problem 4COMQ
Summary Introduction
Introduction:
The variant form of a gene is known as allele. Allele frequency is the ratio between thenumber of specific allelecopies of a in a population and the total number of alleles that are present in a particular population. This is expressed as a fraction or percentage. The allele frequency may change due to gene flow, mutation, or natural selection. The
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
If the frequency of allele 1 is 0.8 and the frequency of allele 2 is 0.2 what is the expected frequency of heterozygotes under Hardy Weinberg?
Group of answer choices
A. 0.32
B. 0.8
C. 0.2
D. 0.16
In a population of 1000 mice, the allele frequency for dominant brown fur is 0.25. The population is in Hardy-Weinberg equilibrium. How many individuals will be heterozygous in the population?
A. 375
B. 625
C. 750
D. 500
In achondroplastic dwarfism, an autosomal dominant disease, the gene is lethal in homozygotes. If the frequency of the normal allele is 0.99, what is the heterozygote frequency?
a. 0.01
b. 0.02
c. 0.98
d. 0.99
An autosomal recessive gene is lethal in homozygotes. In a population at Hardy- Weinberg equilibrium, how many generations will it take to eliminate the gene from the population
a.100
b.It will not be eliminated from the population.
c.1
d.25
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
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
- A population of birds may have red feathers or orange feathers. Red feathered birds have the genotype RR or Rr. Orange feathered birds have the genotype rr. The frequency of the RR genotype is .46 a. What is the frequency of heterozygous birds? B. What is the frequency of the R allele ? C. What is the frequency of r allele?arrow_forwardIn a population of red (dominant allele) or white flowers in Hardy–Weinberg equilibrium, the frequency of red flowers is 91%. What is the frequency of the red allele? a. 9% b. 30% c. 91% d. 70%arrow_forwardIn a population 25 individuals that recently emigrated from a mainland population to form a new population on an unpopulated island the frequency of the dominant allele is 0.64. What is the probability of fixation in the next generation? a. 100% b. 36% c. 64% d. 75%arrow_forward
- In a Hardy-Weinberg population with two alleles, G and g, that are in equilibrium, 40% of the alleles are recessive. What percentage of the population is homozygous for the dominant allele? a. 9% b. 36% c. 70% d. 60% e. 30%arrow_forwardA population of mice contains 20 animals Show work here: with white tails and 30 animals with grey tails. Grey tails are the dominant trait. a. What is the frequency of the white allele? b. What is the frequency of the grey allele? c. What is the frequency of heterozygotes? d. What is the frequency of mice homozygous for the grey allele?arrow_forwardA gene exists in two alleles designated D and d. If 48 copies of this gene are the D allele and 152 are the d allele, what is the allele frequency of D? a. 0.24 c. 0.38 b. 0.32 d. 0.76arrow_forward
- You are surveying population genetics of snails while studying abroad in New Zealand. At your locus of interest, you have AA: 32 Aa:46 aa: 22. Identify the statement that accurately describes this population. a. The genotype frequency of AA is 0.77. b. The frequency of the A allele is 0.45. c. The genotype frequency of the heterozygotes is 0.45. d. The frequency of the a allele is 0.23.arrow_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_forwardA population in Hardy Weinberg Equilibrium has 300 individuals and 25% of these are recessive. What is the frequency of p? a. .75 b. 75 c. .5 d. .25arrow_forward
- Assume 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 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, 350 horses out of 465 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_forwardSuppose that in a population the frequency of a particular recessive condition is 1/400. Assume this is locus with two alleles (A and a) in the population and that the population is at Hardy–Weinberg equilibrium. What is the frequency of the carriers of this condition in the population? A. 0.9025 B. 0.0025 C. 0.05 D. 0.095 E. 0.0475arrow_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:PEARSON
Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax
Anatomy & 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 & Company
Laboratory 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
Genetic Variation and Mutation | 9-1 GCSE Science Biology | OCR, AQA, Edexcel; Author: SnapRevise;https://www.youtube.com/watch?v=bLP8udGGfHU;License: Standard YouTube License, CC-BY