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
Textbook Question
Chapter 27.4, Problem 2COMQ
Which of the following influences on genetic drift involve the migration of a population from one location to another?
a. The bottleneck effect
b. The founder effect
c. Both a and b
d. None of the above
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Genetic drift can be defined as
Group of answer choices
A. accidental changes in DNA structure
b.how lazy loci evolve
c. random change in allele frequency over time
D. differences in fitness between alleles
Which of the following mechanisms can cause linkage disequilibrium?
a.
Drift
b.
Migration
c.
Selection
d.
All of the above
Which of the following statements describes an example of genetic drift?a. Allele g for fat production increases in a small population because birds with more bodyfat have higher survivorship in a harsh winter.b. Random mutation increases the frequency of allele A in one population but not inanother.c. Allele R reaches a frequency of 1.0 because individuals with genotype rr are sterile.d. Allele m is lost when a virus kills all but a few individuals and just by chance, none ofthe survivors possess allele m.
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
- Genetic drift is a. a change in allele frequencies due to random fluctuations. b. likely to result in allele loss or fixation over the long run. c. more pronounced in smaller populations. d. all of the above.arrow_forwardWhich of the following statements is true about linkage disequilibrium? a. New alleles are born into a population in LE with the surrounding loci b. Genetic hitchhiking results from LD between surrounding loci and a locus under strong selection c. Loci in LE in two different populations with different allele frequencies will remain in LE when the two populations completely merge into a single population. d. The greater the selection on a locus, the smaller the haplotype block maintained around it e. D= 0.15 indicates that two loci are in greater LD than D= -0.23arrow_forwardGalápagos medium ground finches are found on Santa Cruz and San Cristóbal islands, which are separated by about 100 km of ocean. Occasionally, individuals from either island fly to the other island to stay. This can alter the allele frequencies of the population through which of the following mechanisms? a. natural selection b. genetic drift c. gene flow d. mutationarrow_forward
- Which of the following evolutionary forces can introduce new genetic variation into a population? a. natural selection and genetic drift b. mutation and gene flow c. natural selection and nonrandom mating d. mutation and genetic driftarrow_forwardSickle cell anemia is maintained in human populations because individuals with a single copy of the sickle cell allele have resistance to malaria but lack the health problems of individuals with two copies of the allele. Variation at the sickle cell locus is maintained by which of the following? Group of answer choices A. heterozygote advantage B. random change in allele frequency C. mutation selection balance D. frequency dependent selectionarrow_forwardWith regard to genetic drift, are the following statements true or false? If a statement is false, explain why. A. Over the long run, genetic drift leads to allele fixation or loss. B. When a new mutation occurs within a population, genetic drift is more likely to cause the loss of the new allele rather than the fixation of the new allele. C. Genetic drift promotes genetic diversity in large populations. D. Genetic drift is more significant in small populations.arrow_forward
- In 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_forwardScientists have concluded that the AS genotype as an adaptation for survival in Africa. Support the conclusion in terms of natural selection A. The frequency of the AS allele increases proportionately to the number of Africans in the population B. Because Malaria does not exist in the U.S and the AS allele does not provide any advantage to survival there. C. As the frequency of Malaria increases so does the frequency of the AS allele combination as it protects against getting Malaria D. Those without the AS genotype die out due to sickle cell disease; the populations left with a greater allelic frequency of the AS genotypearrow_forwardA population of gophers is very isolated, so no individuals can move in/out of the population. It is very small, so random events affect allele frequencies and many traits are under strong selection. Males are chosen randomly. Which statement is correct? A. Allele frequencies in 10 generations will be different than they are today. B. Individual gophers are evolving traits they need to survive C.Genetic drift is not acting on the gophers D. The population is in Hardy-Weinberg equilibriumarrow_forward
- 4) Which of the following does not alter allele frequencies? a.Inbreeding b.Gene flow c.Genetic drift d.The bottleneck effect e.Natural selectionarrow_forwardWhich of the following population sizes (N) of wallabies would be most affected by genetic drift? A. N = 100 B. N = 10000 C. N = 10 D. N = 1000arrow_forwardFor neutral loci in non-coding regions of the genome, what two factors determine the level of genetic variation in a population? A. Genetic drift and time B. Mutation rate and heritability C. Mutation rate and population size D. Gene flow and selection E. Recombination and independent assortmentarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
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