Question 1

Most natural populations are in a state of equilibrium according to Hardy-Weinberg.

Accepted Answer

A) True 
 B)False

Question 2

Horizontal gene transfer is limited to between prokaryotic bacteria of the same species.

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

At equilibrium the allele and genotype frequencies of a population change over time.

Accepted Answer

A) True 
 B)False

Question 5

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 
A)  Disruptive selection 
B)  Stabilizing selection 
C)  Directional selection

Question 6

Random genetic drift is due to chance events that alter the allele frequency in a population.

Accepted Answer

A) True 
 B)False

Question 7

Genetic drift has a greater influence on ________ populations.

Accepted Answer

A)  Small 
B)  Large 
C)  It affects both equally 
A)  Small 
B)  Large 
C)  It affects both equally

Question 8

Migration is a key evolutionary mechanism by which microevolution occurs.

Accepted Answer

A) True 
 B)False

Question 9

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 
A)  Disruptive selection 
B)  Stabilizing selection 
C)  Directional selection

Question 10

Which of the following is NOT a step to calculate a coefficient of inbreeding?

Accepted Answer

A)  Determine the mutation rate. 
B)  Determine the total number of common ancestors. 
C)  Determine the shortest inbreeding path between the individual and the common ancestor. 
D)  Calculate the inbreeding path for each common ancestor. 
E)  Place values in the inbreeding coefficient formula. 
A)  Determine the mutation rate. 
B)  Determine the total number of common ancestors. 
C)  Determine the shortest inbreeding path between the individual and the common ancestor. 
D)  Calculate the inbreeding path for each common ancestor. 
E)  Place values in the inbreeding coefficient formula.

Question 11

Human society favors outbreeding, or the mating of individuals that are genetically unrelated.

Accepted Answer

A) True 
 B)False

Question 12

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 13

The characteristics of a given population over time are ________.

Accepted Answer

A)  Dynamic 
B)  Static 
A)  Dynamic 
B)  Static

Question 14

The prevalence of the allele for sickle cell anemia in some populations is an example of?

Accepted Answer

A)  Heterogeneous environments 
B)  Balancing selection 
C)  Inverted selection 
D)  Non-Darwinian selection 
E)  Nonrandom mating 
A)  Heterogeneous environments 
B)  Balancing selection 
C)  Inverted selection 
D)  Non-Darwinian selection 
E)  Nonrandom mating

Question 15

A SNP would best be described as ________.

Accepted Answer

A)  A gene that comes in multiple different alleles 
B)  A balanced polymorphism system 
C)  A single nucleotide difference between two DNA sequences 
D)  The most likely mutation to affect protein function 
A)  A gene that comes in multiple different alleles 
B)  A balanced polymorphism system 
C)  A single nucleotide difference between two DNA sequences 
D)  The most likely mutation to affect protein function

Question 16

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 
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

Question 17

In the calculation of Hardy-Weinberg equilibria in the context of nonrandom mating, random mating is represented by the factor f equal to 1.

Accepted Answer

A) True 
 B)False

Question 18

The formula p2 + 2pq + q2 = 1 is associated with which of the following?

Accepted Answer

A)  Calculations of heterozygosity 
B)  Hardy-Weinberg equilibrium 
C)  Calculations of recombination frequencies 
D)  Degrees of freedom 
A)  Calculations of heterozygosity 
B)  Hardy-Weinberg equilibrium 
C)  Calculations of recombination frequencies 
D)  Degrees of freedom

Question 19

The movement of alleles from one population to another is called population flow.

Accepted Answer

A) True 
 B)False

Question 20

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 
A)  Bottleneck effect 
B)  Mutation 
C)  Founder effect 
D)  Selection

Exam 27: Population Genetics

Most natural populations are in a state of equilibrium according to Hardy-Weinberg.

Horizontal gene transfer is limited to between prokaryotic bacteria of the same species.

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

At equilibrium the allele and genotype frequencies of a population change over time.

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

Random genetic drift is due to chance events that alter the allele frequency in a population.

Genetic drift has a greater influence on ________ populations.

Migration is a key evolutionary mechanism by which microevolution occurs.

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

Which of the following is NOT a step to calculate a coefficient of inbreeding?

Human society favors outbreeding, or the mating of individuals that are genetically unrelated.

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

The characteristics of a given population over time are ________.

The prevalence of the allele for sickle cell anemia in some populations is an example of?

A SNP would best be described as ________.

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

In the calculation of Hardy-Weinberg equilibria in the context of nonrandom mating, random mating is represented by the factor f equal to 1.

The formula p2 + 2pq + q2 = 1 is associated with which of the following?

The movement of alleles from one population to another is called population flow.

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

Overview of Genetics

Mendelian Inheritance

Chromosome Transmission During Cell Division and Sexual Reproduction

Extensions of Mendelian Inheritance

Non-Mendelian Inheritance

Genetic Linkage and Mapping in Eukaryotes

Genetic Transfer and Mapping in Bacteria

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

Gene Regulation in Eukaryotes I: Transcriptional and Translation Regulation

Gene Regulation in Eukaryotes Ii: Epigenetics

Non-Coding Rnas

Genetics of Viruses

Gene Mutation and Dna Repair

Recombination, Immunogenetics, and Transposition

Molecular Technologies

Biotechnology

Genomics I: Analysis of Dna

Genomics Ii: Functional Genomics, Proteomics, and Bioinformatics

Medical Genetics and Cancer

Developmental Genetics

Complex and Quantitative Traits

Evolutionary Genetics

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