Question 1

The degree of relatedness of two members of a pedigree is calculated using .

Accepted Answer

A)  The calculation of average heterozygosity 
B)  The Hardy-Weinberg rule 
C)  The coefficient of inbreeding 
D)  The chi-square test 
E)  None of the answers are correct 
A)  The calculation of average heterozygosity 
B)  The Hardy-Weinberg rule 
C)  The coefficient of inbreeding 
D)  The chi-square test 
E)  None of the answers are correct C

Question 2

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. A

Question 3

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 
E)  None of the answers are correct 
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 
E)  None of the answers are correct C

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

Which type of selection would lead to two distinct phenotypes?

Accepted Answer

A)  Stabilizing selection 
B)  Phenotype selection 
C)  Fitness selection 
D)  Disruptive selection 
E)  Directional selection 
A)  Stabilizing selection 
B)  Phenotype selection 
C)  Fitness selection 
D)  Disruptive selection 
E)  Directional selection

Question 6

An increase in the mean fitness of a population is usually associated with what?

Accepted Answer

A)  Selection against a genotype 
B)  A population that is better adapted to its environment 
C)  The new population has a greater reproductive potential 
D)  All of the answers are correct 
A)  Selection against a genotype 
B)  A population that is better adapted to its environment 
C)  The new population has a greater reproductive potential 
D)  All of the answers are correct

Question 7

The accumulation of new mutations in a population is usually a factor against the fitness of the population.

Accepted Answer

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

Question 8

The measure of the reproductive success of a genotype is called Darwinian fitness.

Accepted Answer

A) True 
 B)False

Question 9

Which of the following types of selection creates two phenotypic classes from a single original 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 10

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

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is correct concerning events such as natural disasters and habitat destruction?

Accepted Answer

A)  They have a greater impact on small populations 
B)  They are examples of genetic drift 
C)  They eliminate members of a population without regards to genotype 
D)  The resulting population has a different genetic makeup from the starting population 
E)  All of the answers are correct 
A)  They have a greater impact on small populations 
B)  They are examples of genetic drift 
C)  They eliminate members of a population without regards to genotype 
D)  The resulting population has a different genetic makeup from the starting population 
E)  All of the answers are correct

Question 12

Which of the following factors would result in the allele frequency of a population not adding up to 1.0, as is the case in the Hardy-Weinberg rule?

Accepted Answer

A)  Genetic drift 
B)  Inbreeding 
C)  A population changing due to selection 
D)  None of the answers, the allele frequencies must always equal 1.0 
A)  Genetic drift 
B)  Inbreeding 
C)  A population changing due to selection 
D)  None of the answers, the allele frequencies must always equal 1.0

Question 13

Using the information from the above question, what is the frequency of alleles in this population?

Accepted Answer

A)  35% c; 45% c+ 
B)  46.7% c; 53.3% c+ 
C)  50% c; 50% c+ 
D)  55% c; 45% c+ 
E)  None of the answers are correct 
A)  35% c; 45% c+ 
B)  46.7% c; 53.3% c+ 
C)  50% c; 50% c+ 
D)  55% c; 45% c+ 
E)  None of the answers are correct

Question 14

Genetic drift has a greater influence on populations.

Accepted Answer

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

Question 15

Which of the following is true regarding a balanced polymorphism?

Accepted Answer

A)  The frequency of alleles is not changing over time 
B)  The homozygous condition for the alleles is not advantageous to the organism 
C)  The population (or species) occupies a heterogeneous environment 
D)  An example in humans is sickle-cell anemia 
E)  All of the answers are correct 
A)  The frequency of alleles is not changing over time 
B)  The homozygous condition for the alleles is not advantageous to the organism 
C)  The population (or species) occupies a heterogeneous environment 
D)  An example in humans is sickle-cell anemia 
E)  All of the answers are correct

Question 16

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 
E)  None of the answers are correct 
A)  Calculations of heterozygosity 
B)  Hardy-Weinberg equilibrium 
C)  Calculations of recombination frequencies 
D)  Degrees of freedom 
E)  None of the answers are correct

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

Neutral evolutionary forces alter allele frequencies in a random manner.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

The characteristics of a given population over time are .

Accepted Answer

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

Exam 24: Population Genetics

The degree of relatedness of two members of a pedigree is calculated using .

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

A SNP would best be described as .

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

Which type of selection would lead to two distinct phenotypes?

An increase in the mean fitness of a population is usually associated with what?

The accumulation of new mutations in a population is usually a factor against the fitness of the population.

The measure of the reproductive success of a genotype is called Darwinian fitness.

Which of the following types of selection creates two phenotypic classes from a single original distribution?

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

Which of the following is correct concerning events such as natural disasters and habitat destruction?

Which of the following factors would result in the allele frequency of a population not adding up to 1.0, as is the case in the Hardy-Weinberg rule?

Using the information from the above question, what is the frequency of alleles in this population?

Genetic drift has a greater influence on populations.

Which of the following is true regarding a balanced polymorphism?

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

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

Neutral evolutionary forces alter allele frequencies in a random manner.

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

The characteristics of a given population over time are .

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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