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Population Genetics and Speciation
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Science Concepts
Math Skills
Using Science Graphics
Standardized Test Prep
Population Genetics and Speciation
Standardized Test Prep
1. Population genetics is the study of
A. how individuals evolve.
B. how populations interact.
C. how genes determine traits.
D. how alleles change within populations.
Population Genetics and Speciation
Standardized Test Prep
1. Population genetics is the study of
A. how individuals evolve.
B. how populations interact.
C. how genes determine traits.
D. how alleles change within populations.
Population Genetics and Speciation
Standardized Test Prep
2. Phenotypic variations take the form of
F. genetic differences between organisms.
G. character differences between organisms.
H. molecular differences between organisms.
J. chromosomal differences between
organisms.
Population Genetics and Speciation
Standardized Test Prep
2. Phenotypic variations take the form of
F. genetic differences between organisms.
G. character differences between organisms.
H. molecular differences between organisms.
J. chromosomal differences between
organisms.
Population Genetics and Speciation
Standardized Test Prep
3. The major source of new alleles in a natural
population is
A. mutation.
B. polyploidy.
C. genetic drift.
D. natural selection.
Population Genetics and Speciation
Standardized Test Prep
3. The major source of new alleles in a natural
population is
A. mutation.
B. polyploidy.
C. genetic drift.
D. natural selection.
Population Genetics and Speciation
Standardized Test Prep
4. Which of the following is an example of
nonrandom mating?
F. Genes are removed from the population when
individuals migrate.
G. A change in a population’s allele frequency is due to
chance.
H. An individual chooses a mate that has the brightest
coloration.
J. An individual is eliminated from the gene pool by
natural selection.
Population Genetics and Speciation
Standardized Test Prep
4. Which of the following is an example of
nonrandom mating?
F. Genes are removed from the population when
individuals migrate.
G. A change in a population’s allele frequency is due to
chance.
H. An individual chooses a mate that has the brightest
coloration.
J. An individual is eliminated from the gene pool by
natural selection.
Population Genetics and Speciation
Standardized Test Prep
5. Random change in allele frequency due to
chance alone is called
A. gene flow.
B. genetic drift.
C. natural selection.
D. sexual selection.
Population Genetics and Speciation
Standardized Test Prep
5. Random change in allele frequency due to
chance alone is called
A. gene flow.
B. genetic drift.
C. natural selection.
D. sexual selection.
Population Genetics and Speciation
Standardized Test Prep
6. The Hardy Weinberg equation, p2 + 2pq + q2 =
1, describes a state of equilibrium among all alleles
in a population. Expressed in terms of
percentages, the sum of allele frequencies in a
population would be
F. 1%
G. 2%
H. 50%
J. 100%
Population Genetics and Speciation
Standardized Test Prep
6. The Hardy-Weinberg equation, p2 + 2pq + q2 =
1, describes a state of equilibrium among all alleles
in a population. Expressed in terms of
percentages, the sum of allele frequencies in
population would be
F. 1%
G. 2%
H. 50%
J. 100%
Population Genetics and Speciation
Standardized Test Prep
Use the diagram, Flower Color in a Population of Snapdragons, to
answer the following questions.
7. In this population, which genotype has the lowest
frequency?
A. RR
B. rr
C. red
D. white
Population Genetics and Speciation
Standardized Test Prep
Use the diagram, Flower Color in a Population of Snapdragons, to
answer the following questions.
7. In this population, which genotype has the lowest
frequency?
A. RR
B. rr
C. red
D. white
Population Genetics and Speciation
Standardized Test Prep
Use the diagram, Flower Color in a Population of Snapdragons, to
answer the following questions.
8. In this population, what is the frequency of
heterozygotes?
F. 13%
G. 25%
H. 38%
J. 62%
Population Genetics and Speciation
Standardized Test Prep
Use the diagram, Flower Color in a Population of Snapdragons, to
answer the following questions.
8. In this population, what is the frequency of
heterozygotes?
F. 13%
G. 25%
H. 38%
J. 62%
Population Genetics and Speciation
Standardized Test Prep
Use the diagram, Distribution of Body Colors in Bark Beetles, to answer
the following questions.
9. The diagram represents which form of selection?
A. sexual selection
B. stabilizing selection
C. disruptive selection
D. directional selection
Population Genetics and Speciation
Standardized Test Prep
Use the diagram, Distribution of Body Colors in Bark Beetles, to answer
the following questions.
9. The diagram represents which form of selection?
A. sexual selection
B. stabilizing selection
C. disruptive selection
D. directional selection