Question 1

Which of the following types of selection favors the survival of individuals with the intermediate phenotype?

Accepted Answer

A)  Disruptive selection 
B)  Stabilizing selection 
C)  Directional selection 
D)  None of the answers are correct 
A)  Disruptive selection 
B)  Stabilizing selection 
C)  Directional selection 
D)  None of the answers are correct

Question 2

Which of the following types of selection favors one extreme of a phenotypic distribution?

Accepted Answer

A)  Disruptive selection 
B)  Stabilizing selection 
C)  Directional selection 
D)  None of the answers are correct 
A)  Disruptive selection 
B)  Stabilizing selection 
C)  Directional selection 
D)  None of the answers are correct

Question 3

Migration of a random few individuals from one population to a new area to establish a new population is an example of

Accepted Answer

A)  Bottleneck effect 
B)  Mutation 
C)  Founder effect 
D)  Selection 
E)  None of the answers are correct 
A)  Bottleneck effect 
B)  Mutation 
C)  Founder effect 
D)  Selection 
E)  None of the answers are correct

Question 4

The probability that a gene will be altered by a mutation is called the mutation rate.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is NOT a characteristic by which a population is in equilibrium according to Hardy-Weinberg equation?

Accepted Answer

A)  The population is large. 
B)  There is no migration into or out of the population. 
C)  There is no selection against a given genotype. 
D)  There is no mutation in the gene being studied. 
E)  There is nonrandom mating 
A)  The population is large. 
B)  There is no migration into or out of the population. 
C)  There is no selection against a given genotype. 
D)  There is no mutation in the gene being studied. 
E)  There is nonrandom mating

Question 6

The smallest difference in DNA sequence between a gene in two individuals is a single-nucleotide
polymorphism (SNP).

Accepted Answer

A) True 
 B)False

Question 7

Which of the following will alter the frequency of alleles in the population the least?

Accepted Answer

A)  Mutation 
B)  Natural selection 
C)  Genetic drift 
D)  Migration 
E)  All of the answers are equal 
A)  Mutation 
B)  Natural selection 
C)  Genetic drift 
D)  Migration 
E)  All of the answers are equal

Question 8

In calculating the effects of migration on a population, you need to know what information?

Accepted Answer

A)  Original allele frequency of the donor population 
B)  Original allele frequency of the recipient population 
C)  The proportion of the conglomerate population that is made up of migrants 
D)  All of the answers are correct 
A)  Original allele frequency of the donor population 
B)  Original allele frequency of the recipient population 
C)  The proportion of the conglomerate population that is made up of migrants 
D)  All of the answers are correct

Question 9

In humans, the gene for eye color is an example of a trait.

Accepted Answer

A)  Monomorphic 
B)  Polymorphic 
A)  Monomorphic 
B)  Polymorphic

Question 10

In this equation p2 + 2pq + q2 = 1, what does the term 2pq represent?

Accepted Answer

A)  The genotype frequency of homozygous recessive individuals 
B)  The genotype frequency of homozygous dominant individuals 
C)  The genotype frequency of heterozygous individuals 
D)  The sum of the phenotype frequencies in the population 
E)  None of the answers are correct 
A)  The genotype frequency of homozygous recessive individuals 
B)  The genotype frequency of homozygous dominant individuals 
C)  The genotype frequency of heterozygous individuals 
D)  The sum of the phenotype frequencies in the population 
E)  None of the answers are correct

Question 11

If two individuals of a population, who vary in their phenotype, mate, it is called .

Accepted Answer

A)  Outbreeding 
B)  Inbreeding 
C)  Disassortive mating 
D)  Assertive mating 
A)  Outbreeding 
B)  Inbreeding 
C)  Disassortive mating 
D)  Assertive mating

Question 12

The coefficient of inbreeding (F) tells us what about an individual?

Accepted Answer

A)  The probability that they are homozygous due to inheritance from a common ancestor 
B)  Their genotype 
C)  The probability of obtaining a certain allele from the gene pool 
D)  None of the answers are correct 
A)  The probability that they are homozygous due to inheritance from a common ancestor 
B)  Their genotype 
C)  The probability of obtaining a certain allele from the gene pool 
D)  None of the answers are correct

Question 13

In a given population of Drosophila, curly wings (c) is recessive to the wild-type condition of straight wings (c+). You isolate a population of 35 curly winged flies, 70 flies that are heterozygous for straight wings and 45 that are homozygous for straight wings. What is the total number alleles in the gene pool?

Accepted Answer

A)  2 
B)  150 
C)  230 
D)  300 
E)  None of the answers are correct 
A)  2 
B)  150 
C)  230 
D)  300 
E)  None of the answers are correct

Question 14

Which of the following is not true concerning a population in equilibrium according to the Hardy- Weinberg rule?

Accepted Answer

A)  There is no migration into or out of the population 
B)  Individuals of the population mate randomly 
C)  The population size is very large 
D)  Selection is favoring the dominant allele 
E)  There is no mutation in the populations 
A)  There is no migration into or out of the population 
B)  Individuals of the population mate randomly 
C)  The population size is very large 
D)  Selection is favoring the dominant allele 
E)  There is no mutation in the populations

Question 15

A group of individuals from the same species that can interbreed with one another is the definition of a .

Accepted Answer

A)  Species 
B)  Population 
C)  Race 
D)  Community 
E)  Kingdom 
A)  Species 
B)  Population 
C)  Race 
D)  Community 
E)  Kingdom

Question 16

A gene that is found in less that 1% of a given population is called monomorphic.

Accepted Answer

A) True 
 B)False

Question 17

The selection coefficient is the measure to which a phenotype is selected against.

Accepted Answer

A) True 
 B)False

Question 18

If the allele frequency of the dominant allele is 0.4, what value is used for the term p2 in the equation above?

Accepted Answer

A)  0.4 
B)  0.2 
C)  0.16 
D)  16 
E)  None of the answers are correct 
A)  0.4 
B)  0.2 
C)  0.16 
D)  16 
E)  None of the answers are correct

Question 19

A heterogeneous environment is typically a factor against the fitness of the population.

Accepted Answer

A)  Negative 
B)  Positive 
C)  Neutral 
A)  Negative 
B)  Positive 
C)  Neutral

Question 20

Population geneticists study what aspects of a population?

Accepted Answer

A)  Genetic variation 
B)  Allele frequencies 
C)  Genotype frequencies 
D)  All of the answers are correct 
A)  Genetic variation 
B)  Allele frequencies 
C)  Genotype frequencies 
D)  All of the answers are correct

Exam 24: Population Genetics

Which of the following types of selection favors the survival of individuals with the intermediate phenotype?

Which of the following types of selection favors one extreme of a phenotypic distribution?

Migration of a random few individuals from one population to a new area to establish a new population is an example of

The probability that a gene will be altered by a mutation is called the mutation rate.

Which of the following is NOT a characteristic by which a population is in equilibrium according to Hardy-Weinberg equation?

The smallest difference in DNA sequence between a gene in two individuals is a single-nucleotide polymorphism (SNP).

Which of the following will alter the frequency of alleles in the population the least?

In calculating the effects of migration on a population, you need to know what information?

In humans, the gene for eye color is an example of a trait.

In this equation p2 + 2pq + q2 = 1, what does the term 2pq represent?

If two individuals of a population, who vary in their phenotype, mate, it is called .

The coefficient of inbreeding (F) tells us what about an individual?

Which of the following is not true concerning a population in equilibrium according to the Hardy- Weinberg rule?

A group of individuals from the same species that can interbreed with one another is the definition of a .

A gene that is found in less that 1% of a given population is called monomorphic.

The selection coefficient is the measure to which a phenotype is selected against.

If the allele frequency of the dominant allele is 0.4, what value is used for the term p2 in the equation above?

A heterogeneous environment is typically a factor against the fitness of the population.

Population geneticists study what aspects of a population?

Overview of Genetics

Mendelian Inheritance

Reproduction and Chromosome Transmission

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria and

Variation in Chromosome Structure and Number

Molecular Structure of Dna and Rna

Chromosome Organization and Molecular Structure

Dna Replication

Gene Transcription and Rna Modification

Translation of Mrna

Gene Regulation in Bacteria and Bacteriophages

Gene Regulation in Eukaryotes

Gene Mutation and Dna Repair

Recombination and Transposition at the Molecular

Recombinant Dna Technology

Biotechnology

Genomics I: Analysis of Dna

Genomics II: Functional Genomics, Proteomics, and

Medical Genetics and Cancer

Developmental Genetics

Quantitative Genetics

Evolutionary Genetics

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