Question 1

Several steps have been hypothesized for the evolution of sex chromosomes. Put the steps in order, from oldest to newest.
-Dosage compensation

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
A)  1 
B)  2 
C)  3 
D)  4

Question 2

Which of the following are true of epigenetic effects? Please select all that apply.

Accepted Answer

A)  The effect is retained in daughter cells 
B)  The effect is a heritable change in gene activity 
C)  The effect is a result of changes in the DNA 
D)  The effect is involved in Y chromosome inactivation 
A)  The effect is retained in daughter cells 
B)  The effect is a heritable change in gene activity 
C)  The effect is a result of changes in the DNA 
D)  The effect is involved in Y chromosome inactivation

Question 3

Match the organism with the most appropriate statement regarding sex determination.
-Temperature is involved in sex determination

Accepted Answer

A)  Human 
B)  Bird 
C)  Drosophila 
D)  Turtle 
A)  Human 
B)  Bird 
C)  Drosophila 
D)  Turtle

Question 4

Sex is not always inherited.

Accepted Answer

A) True 
 B)False

Question 5

Match the organism with the most appropriate statement regarding sex determination.
-Number of X chromosomes determines sex

Accepted Answer

A)  Human 
B)  Bird 
C)  Drosophila 
D)  Turtle 
A)  Human 
B)  Bird 
C)  Drosophila 
D)  Turtle

Question 6

TDF is the major sex-determining component in mammals. What does TDF do?

Accepted Answer

A)  TDF inactivates one of the X chromosomes 
B)  TDF encodes SRY on the Y chromosome 
C)  TDF prevents gene expression from the X chromosome 
D)  TDF stimulates development of testes 
A)  TDF inactivates one of the X chromosomes 
B)  TDF encodes SRY on the Y chromosome 
C)  TDF prevents gene expression from the X chromosome 
D)  TDF stimulates development of testes

Question 7

In human pedigrees, which characteristics are likely to underlie an inherited trait that appears in males more frequently than in females? Please select all that apply.

Accepted Answer

A)  Trait is recessive 
B)  Trait is dominant 
C)  Trait is X-linked 
D)  Trait is Y-linked 
A)  Trait is recessive 
B)  Trait is dominant 
C)  Trait is X-linked 
D)  Trait is Y-linked

Question 8

Match the organism with the most appropriate statement regarding sex determination.
-The male chromosome is smaller than the female chromosome

Accepted Answer

A)  Human 
B)  Bird 
C)  Drosophila 
D)  Turtle 
A)  Human 
B)  Bird 
C)  Drosophila 
D)  Turtle

Question 9

Which of the following factors can impact sex development? Please select all that apply.

Accepted Answer

A)  Mitosis 
B)  Meiosis 
C)  Environment 
D)  Sex chromosomes 
A)  Mitosis 
B)  Meiosis 
C)  Environment 
D)  Sex chromosomes

Question 10

Which of the following leads to gametes receiving incorrect numbers of sex chromosomes?

Accepted Answer

A)  Apoptosis 
B)  Synapsis 
C)  Aneuploidy 
D)  Non-disjunction 
A)  Apoptosis 
B)  Synapsis 
C)  Aneuploidy 
D)  Non-disjunction

Question 11

The opsin genes that encode light receptors are on the Y-chromosome in humans, meaning that red-green color blindness is more likely to occur in males than females.

Accepted Answer

A) True 
 B)False

Several steps have been hypothesized for the evolution of sex chromosomes. Put the steps in order, from oldest to newest. -Dosage compensation

Which of the following are true of epigenetic effects? Please select all that apply.

Match the organism with the most appropriate statement regarding sex determination. -Temperature is involved in sex determination

Sex is not always inherited.

Match the organism with the most appropriate statement regarding sex determination. -Number of X chromosomes determines sex

TDF is the major sex-determining component in mammals. What does TDF do?

In human pedigrees, which characteristics are likely to underlie an inherited trait that appears in males more frequently than in females? Please select all that apply.

Match the organism with the most appropriate statement regarding sex determination. -The male chromosome is smaller than the female chromosome

Which of the following factors can impact sex development? Please select all that apply.

Which of the following leads to gametes receiving incorrect numbers of sex chromosomes?

The opsin genes that encode light receptors are on the Y-chromosome in humans, meaning that red-green color blindness is more likely to occur in males than females.

Darwins Finches: Evolution, Genomes, and Genes

The Central Dogma of Molecular Biology

Genome Structure, Organization, and Variation

Descent With Modification: Dna Replication and Mutation

The Inheritance of Single Gene Traits

The Cellular Basis for Mendelian Genetics

The Inheritance of Multiple Genes

The Locations of Genes on Chromosomes: Linkage and Genetic Maps

Human Genetic Mapping, Genome Wide Association Studies, and Complex Traits

Exchange and Evolution

Transcription: Reading and Expressing Genes

Translation: From Nucleic Acids to Amino Acids

Networks of Gene Regulation

Genetic Analysis of Cellular Processes

The Genetics of Populations

Metagenomes: Genome Analysis of Communities

Filters

Exam 7: X-Linked Genes and Sex Chromosomes

Several steps have been hypothesized for the evolution of sex chromosomes. Put the steps in order, from oldest to newest. -Dosage compensation

Which of the following are true of epigenetic effects? Please select all that apply.

Match the organism with the most appropriate statement regarding sex determination. -Temperature is involved in sex determination

Sex is not always inherited.

Match the organism with the most appropriate statement regarding sex determination. -Number of X chromosomes determines sex

TDF is the major sex-determining component in mammals. What does TDF do?

In human pedigrees, which characteristics are likely to underlie an inherited trait that appears in males more frequently than in females? Please select all that apply.

Match the organism with the most appropriate statement regarding sex determination. -The male chromosome is smaller than the female chromosome

Which of the following factors can impact sex development? Please select all that apply.

Which of the following leads to gametes receiving incorrect numbers of sex chromosomes?

The opsin genes that encode light receptors are on the Y-chromosome in humans, meaning that red-green color blindness is more likely to occur in males than females.

Darwins Finches: Evolution, Genomes, and Genes

The Central Dogma of Molecular Biology

Genome Structure, Organization, and Variation

Descent With Modification: Dna Replication and Mutation

The Inheritance of Single Gene Traits

The Cellular Basis for Mendelian Genetics

The Inheritance of Multiple Genes

The Locations of Genes on Chromosomes: Linkage and Genetic Maps

Human Genetic Mapping, Genome Wide Association Studies, and Complex Traits

Exchange and Evolution

Transcription: Reading and Expressing Genes

Translation: From Nucleic Acids to Amino Acids

Networks of Gene Regulation

Genetic Analysis of Cellular Processes

The Genetics of Populations

Metagenomes: Genome Analysis of Communities

Filters