Genetics: Analysis and Principles
5th Edition
ISBN: 9780073525341
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 26.4, Problem 1COMQ
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.
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Heritability:
A.
is the proportion of a trait in an individual that is explained by genes.
B.
decreases due to natural selection.
C.
is not influenced by the amount of environmental variance in a population.
D.
All of the above
With 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.
Population genetics is the study of: a. how selective forces change the allele frequencies in a population over time b. the genetic basis of population-wide traits c. whether traits have a genetic basis d. the degree of inbreeding in a population
Chapter 26 Solutions
Genetics: Analysis and Principles
Ch. 26.1 - A gene pool is a. all of the genes in a single...Ch. 26.1 - 2. In natural populations, most genes...Ch. 26.1 - A gene exists in two alleles designatedDandd. If...Ch. 26.1 - Prob. 4COMQCh. 26.2 - Which of the following is a factor that, by...Ch. 26.3 - 1. Darwinian fitness is a measure...Ch. 26.3 - 2. Within a particular population, darkly colored...Ch. 26.3 - 3. A population occupies heterogeneous...Ch. 26.3 - Prob. 4COMQCh. 26.4 - 1. Genetic drift is
a. a change in allele...
Ch. 26.4 - 2. Which of the following influences on genetic...Ch. 26.5 - Gene flow depends on a. migration. b. the ability...Ch. 26.6 - 1. Inbreeding is sexual reproduction between...Ch. 26.7 - The mutation rate is a. the likelihood that a new...Ch. 26.7 - 2. The transfer of an antibiotic resistance gene...Ch. 26.7 - Prob. 3COMQCh. 26 - 1. What is the gene pool? How is a gene pool...Ch. 26 - Prob. 2CONQCh. 26 - Prob. 3CONQCh. 26 - Prob. 4CONQCh. 26 - The termpolymorphismcan refer to both genes and...Ch. 26 - Prob. 6CONQCh. 26 - For a gene existing in two alleles, what are the...Ch. 26 - 8. In a population, the frequencies of two...Ch. 26 - The ability to roll your tongue is inherited as a...Ch. 26 - What evolutionary factors can cause allele...Ch. 26 - What is the difference between a neutral and an...Ch. 26 - Prob. 12CONQCh. 26 - Prob. 13CONQCh. 26 - Describe the similarities and differences among...Ch. 26 - 15. Is each of the following examples due to...Ch. 26 - Prob. 16CONQCh. 26 - Prob. 17CONQCh. 26 - 18. A group of four birds flies to a new location...Ch. 26 - 19. Describe what happens to allele frequencies as...Ch. 26 - With regard to genetic drift, are the following...Ch. 26 - When two populations frequently intermix due to...Ch. 26 - Two populations of antelope are separated by a...Ch. 26 - Prob. 23CONQCh. 26 - 24. Using the pedigree shown here, answer the...Ch. 26 - A family pedigree is shown here. A. What is the...Ch. 26 - 26. A family pedigree is shown here.
A. What is...Ch. 26 - Prob. 27CONQCh. 26 - Prob. 28CONQCh. 26 - 1. You will need to be familiar with the...Ch. 26 - You will need to refer to question 2 in More...Ch. 26 - Prob. 3EQCh. 26 - Prob. 4EQCh. 26 - You will need to refer to question 2 in More...Ch. 26 - Prob. 6EQCh. 26 - Prob. 7EQCh. 26 - In the Grants study of the medium ground finch, do...Ch. 26 - 9. A recessive lethal allele has achieved a...Ch. 26 - Among a large population of 2 million gray...Ch. 26 - In a donor population, the allele frequencies for...Ch. 26 - Prob. 12EQCh. 26 - Prob. 13EQCh. 26 - Prob. 14EQCh. 26 - 15. What would you expect to be the minimum...Ch. 26 - Discuss examples of positive and negative...Ch. 26 - Discuss the role of mutation in the origin of...Ch. 26 - Prob. 3QSDC
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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