Question 1

How would you calculate the coefficient of inbreeding for individual IV- 1 in the pedigree below?

Accepted Answer

A)  F= 2(1/2)3 
B)  F= 4(1/2)2 
C)  F= 2(1/2)2 
D)  F= 2(1/2)4 
E)  F= 4(1/2)3 
A)  F= 2(1/2)3 
B)  F= 4(1/2)2 
C)  F= 2(1/2)2 
D)  F= 2(1/2)4 
E)  F= 4(1/2)3 D

Question 2

_________is an evolutionary mechanism that favors the reproductive success of certain members of a population over others as a result of differences in anatomical, physiological, or behavioral traits they possess.

Accepted Answer

Natural selection

Question 3

In the pattern of natural selection called _________the favored phenotype has a homozygous genotype, while the consequence of natural selection favoring the heterozygote is a balanced polymorphism.

Accepted Answer

directional natural selection or directional selection

Question 4

The coefficient of inbreeding (F) can be used to estimate the proportion of loci that are_________ .

Accepted Answer

A)  fixed in a population 
B)  lethal alleles 
C)  recessive 
D)  homozygous identical by descent 
E)  heterozygous by descent 
A)  fixed in a population 
B)  lethal alleles 
C)  recessive 
D)  homozygous identical by descent 
E)  heterozygous by descent

Question 5

A difference in allelic frequencies that is produced when a new population is established by a few individuals is known as what type of genetic drift?

Accepted Answer

The answer of A difference in allelic frequencies that is...

Question 6

Which aspect of population genetics can lead to changes in allele frequencies in a new mixed population following migration?

Accepted Answer

A)  founder effect 
B)  mutation 
C)  gene flow 
D)  natural selection 
E)  bottleneck effect 
A)  founder effect 
B)  mutation 
C)  gene flow 
D)  natural selection 
E)  bottleneck effect

Question 7

Researchers collect data on an island population of frogs and find a mutation rate of the recessive allele, d, is 1 × 10- 6. The relative fitness of the individuals homozygous from this allele is 0.7. What is the allele frequency of this recessive allele at equilibrium?

Accepted Answer

A)  3.0 × 10- 7 
B)  1.4 × 10- 6 
C)  7.0 × 10- 7 
D)  1.2 × 10- 3 
E)  1.8 × 10- 3 
A)  3.0 × 10- 7 
B)  1.4 × 10- 6 
C)  7.0 × 10- 7 
D)  1.2 × 10- 3 
E)  1.8 × 10- 3

Question 8

All Old Order Amish families from Lancaster County with Ellis- van Creveld syndrome can trace their genealogies to Mr. and Mrs. Samuel King, who immigrated to Lancaster County in 1744. This is an example of___________ .

Accepted Answer

A)  Hardy- Weinberg equilibrium 
B)  founder effect 
C)  mutation 
D)  gene flow 
E)  bottleneck effect 
A)  Hardy- Weinberg equilibrium 
B)  founder effect 
C)  mutation 
D)  gene flow 
E)  bottleneck effect

Question 9

What type of geographic separation resulted in diversification of an ancestral species of ground squirrel into two species, Ammospermophilus leucurus, found on the north rim of the Grand Canyon, and members of the Ammospermophilus harrisii on the south rim of the canyon?

Accepted Answer

allopatric

Question 10

Of the five aspects of Hardy- Weinberg equilibrium, which one directly affects phenotypic frequencies rather than genotypic frequencies?

Accepted Answer

The answer of Of the five aspects of Hardy- Weinberg...

Question 11

The coefficient of inbreeding quantifies the probability that two alleles in a homozygous individual are ___________, having descended from the same copy of the allele carried by a common ancestor of the inbred individual.

Accepted Answer

identical

Question 12

The incidence of Tay Sachs, an autosomal recessive genetic disorder, is approximately 1 in 3,500 in a certain population of Ashkenazi Jews. Assuming Hardy- Weinberg equilibrium, what is the frequency of carriers for the Tay Sachs allele in this population?

Accepted Answer

A)  3.3% 
B)  98.5% 
C)  1.5% 
D)  2.9% 
E)  1.7% 
A)  3.3% 
B)  98.5% 
C)  1.5% 
D)  2.9% 
E)  1.7%

Question 13

If the relative fitness value is w = 0.6, what is the selection coefficient used to identify the differences between the fitnesses of organisms with different traits?

Accepted Answer

0.4 |1- w|; i.e., the absolute

Question 14

When examining the effects of forward and reverse mutation rates, what equation is used to calculate the change in the frequency of A2, or Oq?

Accepted Answer

The answer of When examining the effects of forward and...

Question 15

Given the following genetic profile, what is the mean fitness of the population? $$\begin{array} { l l l l } 
\text { Genotype } & A 1 A 1 & A 1 A 2 & A 2 A 2 \
\text { Frequency } & 0.55 & 0.20 & 0.25 \
\text { Number } & 2750 & 1000 & 1250 \
\text { Relative fitness } ( w ) & 1.0 & 0.75 & 0.50
\end{array}$$

Accepted Answer

A)  1 
B)  0.3025 
C)  0.825 
D)  0.75 
E)  0.55 
A)  1 
B)  0.3025 
C)  0.825 
D)  0.75 
E)  0.55

Question 16

Data for an autosomal recessive trait shows that heterozygous individuals have the highest relative fitness. Those who are unaffected and homozygous for the dominant A allele have a relative fitness of 84% compared to heterozygous individuals, but only about 30% of those who are affected survived to reproduce. What is the estimated equilibrium frequency for allele A in this population?

Accepted Answer

A)  0.700 
B)  0.160 
C)  0.186 
D)  0.814 
E)  0.357 
A)  0.700 
B)  0.160 
C)  0.186 
D)  0.814 
E)  0.357

Question 17

What is the ultimate source of genetic variation in populations?

Accepted Answer

The answer of What is the ultimate source of genetic...

Question 18

When populations share a single habitat but are isolated by genetic or postzygotic mechanisms that prevent gene flow, what process can cause populations to diverge?

Accepted Answer

A)  random mating 
B)  gene duplication 
C)  allopatric speciation 
D)  sympatric speciation 
E)  random mutation 
A)  random mating 
B)  gene duplication 
C)  allopatric speciation 
D)  sympatric speciation 
E)  random mutation

Question 19

Which mechanism maintains the biological ability of populations to interbreed and can thus prevent evolutionary divergence of populations?

Accepted Answer

The answer of Which mechanism maintains the biological ability of...

Question 20

In an insect species, survival in agricultural fields regularly sprayed with insecticide is determined by the genotype for a detoxification enzyme encoded by a gene with two alleles, A and D. Which of the following statements is consistent with the data? $$\begin{array} { | l | l | } 
\hline \text { Genotype } & \text { Relative Fitness } \
\hline \mathrm { AA } & 1.00 \
\hline \mathrm { AD } & 0.70 \
\hline \mathrm { OD } & 0.05 \
\hline
\end{array}$$

Accepted Answer

A)  Directional selection will increase the frequency of the A allele at a pace determined by the intensity of natural selection. 
B)  The D allele frequency will change faster as it gets less frequent. 
C)  Eventually, natural selection should lead to a balanced polymorphism. 
D)  This will likely lead to the frequency of the A allele being eliminated (f=0.0) and the D allele being fixed (f=1.0). 
E)  Both the A and D alleles should reach stable equilibrium frequencies that are maintained in a steady state. 
A)  Directional selection will increase the frequency of the A allele at a pace determined by the intensity of natural selection. 
B)  The D allele frequency will change faster as it gets less frequent. 
C)  Eventually, natural selection should lead to a balanced polymorphism. 
D)  This will likely lead to the frequency of the A allele being eliminated (f=0.0) and the D allele being fixed (f=1.0). 
E)  Both the A and D alleles should reach stable equilibrium frequencies that are maintained in a steady state.

How would you calculate the coefficient of inbreeding for individual IV- 1 in the pedigree below?

_________is an evolutionary mechanism that favors the reproductive success of certain members of a population over others as a result of differences in anatomical, physiological, or behavioral traits they possess.

In the pattern of natural selection called _________the favored phenotype has a homozygous genotype, while the consequence of natural selection favoring the heterozygote is a balanced polymorphism.

The coefficient of inbreeding (F) can be used to estimate the proportion of loci that are_________ .

A difference in allelic frequencies that is produced when a new population is established by a few individuals is known as what type of genetic drift?

Which aspect of population genetics can lead to changes in allele frequencies in a new mixed population following migration?

Researchers collect data on an island population of frogs and find a mutation rate of the recessive allele, d, is 1 × 10^{- 6}. The relative fitness of the individuals homozygous from this allele is 0.7. What is the allele frequency of this recessive allele at equilibrium?

All Old Order Amish families from Lancaster County with Ellis- van Creveld syndrome can trace their genealogies to Mr. and Mrs. Samuel King, who immigrated to Lancaster County in 1744. This is an example of___________ .

What type of geographic separation resulted in diversification of an ancestral species of ground squirrel into two species, Ammospermophilus leucurus, found on the north rim of the Grand Canyon, and members of the Ammospermophilus harrisii on the south rim of the canyon?

Of the five aspects of Hardy- Weinberg equilibrium, which one directly affects phenotypic frequencies rather than genotypic frequencies?

The coefficient of inbreeding quantifies the probability that two alleles in a homozygous individual are ___________, having descended from the same copy of the allele carried by a common ancestor of the inbred individual.

The incidence of Tay Sachs, an autosomal recessive genetic disorder, is approximately 1 in 3,500 in a certain population of Ashkenazi Jews. Assuming Hardy- Weinberg equilibrium, what is the frequency of carriers for the Tay Sachs allele in this population?

If the relative fitness value is w = 0.6, what is the selection coefficient used to identify the differences between the fitnesses of organisms with different traits?

When examining the effects of forward and reverse mutation rates, what equation is used to calculate the change in the frequency of A2, or Oq?

Given the following genetic profile, what is the mean fitness of the population? Genotype A1A1 A1A2 A2A2 Frequency 0.55 0.20 0.25 Number 2750 1000 1250 Relative fitness (w) 1.0 0.75 0.50

What is the ultimate source of genetic variation in populations?

When populations share a single habitat but are isolated by genetic or postzygotic mechanisms that prevent gene flow, what process can cause populations to diverge?

Which mechanism maintains the biological ability of populations to interbreed and can thus prevent evolutionary divergence of populations?

In an insect species, survival in agricultural fields regularly sprayed with insecticide is determined by the genotype for a detoxification enzyme encoded by a gene with two alleles, A and D. Which of the following statements is consistent with the data? Genotype Relative Fitness 1.00 0.70 0.05

The Molecular Basis of Heredity, Variation, and Evolution

Transmission Genetics

Cell Division and Chromosome Heredity

Inheritance Patterns of Single Genes and Gene Interaction

Genetic Linkage and Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophage

Dna Structure and Replication

Molecular Biology of Transcription and Rna Processing

The Molecular Biology of Translation

Chromosome Chapter Title Tbd

Gene Mutation, Dna Repair, and Homologous Recombination

Chromosome Chapter Title Tbd

Regulation of Gene Expression in Bacteria and Bacteriophage

Regulation of Gene Expression in Eukaryotes

Analysis of Gene Function by Forward Genetics and Reverse Genetics

Recombinant Dna Technology and Its Applications

Genomics: Genetics From a Whole-Genome Perspective

Organelle Inheritance and the Evolution of Organelle Genomes

Developmental Genetics

Population Genetics and Evolution at the Population, Species, and Molecular Levels

Filters

Exam 20: Genetic Analysis of Quantitative Traits

How would you calculate the coefficient of inbreeding for individual IV- 1 in the pedigree below?

_________is an evolutionary mechanism that favors the reproductive success of certain members of a population over others as a result of differences in anatomical, physiological, or behavioral traits they possess.

In the pattern of natural selection called _________the favored phenotype has a homozygous genotype, while the consequence of natural selection favoring the heterozygote is a balanced polymorphism.

The coefficient of inbreeding (F) can be used to estimate the proportion of loci that are_________ .

A difference in allelic frequencies that is produced when a new population is established by a few individuals is known as what type of genetic drift?

Which aspect of population genetics can lead to changes in allele frequencies in a new mixed population following migration?

Researchers collect data on an island population of frogs and find a mutation rate of the recessive allele, d, is 1 × 10- 6. The relative fitness of the individuals homozygous from this allele is 0.7. What is the allele frequency of this recessive allele at equilibrium?

All Old Order Amish families from Lancaster County with Ellis- van Creveld syndrome can trace their genealogies to Mr. and Mrs. Samuel King, who immigrated to Lancaster County in 1744. This is an example of___________ .

What type of geographic separation resulted in diversification of an ancestral species of ground squirrel into two species, Ammospermophilus leucurus, found on the north rim of the Grand Canyon, and members of the Ammospermophilus harrisii on the south rim of the canyon?

Of the five aspects of Hardy- Weinberg equilibrium, which one directly affects phenotypic frequencies rather than genotypic frequencies?

The coefficient of inbreeding quantifies the probability that two alleles in a homozygous individual are ___________, having descended from the same copy of the allele carried by a common ancestor of the inbred individual.

The incidence of Tay Sachs, an autosomal recessive genetic disorder, is approximately 1 in 3,500 in a certain population of Ashkenazi Jews. Assuming Hardy- Weinberg equilibrium, what is the frequency of carriers for the Tay Sachs allele in this population?

If the relative fitness value is w = 0.6, what is the selection coefficient used to identify the differences between the fitnesses of organisms with different traits?

When examining the effects of forward and reverse mutation rates, what equation is used to calculate the change in the frequency of A2, or Oq?

Given the following genetic profile, what is the mean fitness of the population? Genotype A1A1 A1A2 A2A2 Frequency 0.55 0.20 0.25 Number 2750 1000 1250 Relative fitness (w) 1.0 0.75 0.50

What is the ultimate source of genetic variation in populations?

When populations share a single habitat but are isolated by genetic or postzygotic mechanisms that prevent gene flow, what process can cause populations to diverge?

Which mechanism maintains the biological ability of populations to interbreed and can thus prevent evolutionary divergence of populations?

In an insect species, survival in agricultural fields regularly sprayed with insecticide is determined by the genotype for a detoxification enzyme encoded by a gene with two alleles, A and D. Which of the following statements is consistent with the data? Genotype Relative Fitness 1.00 0.70 0.05

The Molecular Basis of Heredity, Variation, and Evolution

Transmission Genetics

Cell Division and Chromosome Heredity

Inheritance Patterns of Single Genes and Gene Interaction

Genetic Linkage and Mapping in Eukaryotes

Genetic Analysis and Mapping in Bacteria and Bacteriophage

Dna Structure and Replication

Molecular Biology of Transcription and Rna Processing

The Molecular Biology of Translation

Chromosome Chapter Title Tbd

Gene Mutation, Dna Repair, and Homologous Recombination

Chromosome Chapter Title Tbd

Regulation of Gene Expression in Bacteria and Bacteriophage

Regulation of Gene Expression in Eukaryotes

Analysis of Gene Function by Forward Genetics and Reverse Genetics

Recombinant Dna Technology and Its Applications

Genomics: Genetics From a Whole-Genome Perspective

Organelle Inheritance and the Evolution of Organelle Genomes

Developmental Genetics

Population Genetics and Evolution at the Population, Species, and Molecular Levels

Filters

Researchers collect data on an island population of frogs and find a mutation rate of the recessive allele, d, is 1 × 10^{- 6}. The relative fitness of the individuals homozygous from this allele is 0.7. What is the allele frequency of this recessive allele at equilibrium?