Question 1

Which of the following is FALSE regarding individuals who are heterozygous for a large inversion?

Accepted Answer

A)  Crossovers between homologous chromosomes that occur outside the inverted region produce nonviable gametes. 
B)  Viable gametes will contain either the normal- order chromosome or the inversion- order chromosome. 
C)  Crossover in the inversion loop of a paracentric inversion heterozygote results in viable and nonviable gametes. 
D)  Crossover in the inversion loop of a pericentric inversion heterozygote results in gametes with recombinant chromosomes that contain deletions and duplications. 
E)  There is a higher probability of a crossover that would result in reduced fertility. 
A)  Crossovers between homologous chromosomes that occur outside the inverted region produce nonviable gametes. 
B)  Viable gametes will contain either the normal- order chromosome or the inversion- order chromosome. 
C)  Crossover in the inversion loop of a paracentric inversion heterozygote results in viable and nonviable gametes. 
D)  Crossover in the inversion loop of a pericentric inversion heterozygote results in gametes with recombinant chromosomes that contain deletions and duplications. 
E)  There is a higher probability of a crossover that would result in reduced fertility.

Question 2

How will the centromeres be distributed in the two recombinant chromosomes following a crossover in the inversion loop of a paracentric inversion heterozygote?

Accepted Answer

dicentric chromosome

Question 3

What is the term for the phenomenon that describes the significant reduction, or absence, of recombinant chromosomes in the gametes produced by inversion heterozygotes, when a crossover is within the inverted region?

Accepted Answer

crossover

Question 4

Which type of chromosome has no p arms?

Accepted Answer

A)  acrocentric 
B)  telocentric 
C)  metacentric 
D)  submetacentric 
E)  subacrocentric 
A)  acrocentric 
B)  telocentric 
C)  metacentric 
D)  submetacentric 
E)  subacrocentric

Question 5

Describe two mechanisms for causing uniparental disomy, and explain how this chromosomal defect is involved in Prader- Willi syndrome and Angelman syndrome.

Accepted Answer

Uniparental disomy occurs when both copi

Question 6

Eukaryotic chromosomes are a combination of proteins and DNA, which allows the cell to perform which four essential functions?

Accepted Answer

1. compacts the DNA so it can fit in the

Question 7

If you want to prevent chromatin loops from being anchored to the chromosome scaffold, which regions of the DNA would you target?

Accepted Answer

MARs (matr

Question 8

Which of the following is true of the gametes of a human female who has nondisjunction of her X chromosomes in meiosis I?

Accepted Answer

A)  The gametes contain 22 or 24 chromosomes. 
B)  The gametes contain 22, 23, or 24 chromosomes. 
C)  All the gametes contain 22 chromosomes. 
D)  All the gametes contain 23 chromosomes. 
E)  All the gametes contain 24 chromosomes. 
A)  The gametes contain 22 or 24 chromosomes. 
B)  The gametes contain 22, 23, or 24 chromosomes. 
C)  All the gametes contain 22 chromosomes. 
D)  All the gametes contain 23 chromosomes. 
E)  All the gametes contain 24 chromosomes.

Question 9

________is used to map genes in deleted chromosome regions by a method known as deletion mapping. It is a genetic phenomenon that occurs when a normally recessive allele is "unmasked" and expressed in the phenotype because the dominant allele on the homologous chromosome has been deleted.

Accepted Answer

The answer of ________is used to map genes in deleted...

Question 10

What technique would you use to detect a target sequence in an intact chromosome using a labeled molecular probe?

Accepted Answer

A)  karyotyping 
B)  DNA sequencing 
C)  polymerase chain reaction (PCR) 
D)  fluorescent in situ hybridization (FISH) 
E)  western/immuno blotting 
A)  karyotyping 
B)  DNA sequencing 
C)  polymerase chain reaction (PCR) 
D)  fluorescent in situ hybridization (FISH) 
E)  western/immuno blotting

Question 11

The flies with variegated eye color had what abnormal chromosome structure?

Accepted Answer

A)  X- chromosome deletion that deleted the w+ gene in some cells following X- ray exposure 
B)  X- chromosome inversion that moves the w+ gene to a different orientation on the chromosome in some cells following X- ray exposure 
C)  a mutation in the w+ gene following X- ray exposure that causes the gene to be overexpressed in a tissue- specific manner 
D)  a mutation in a somatic chromosome that causes the w+ gene to be translocated to the X- chromosomes following X- ray exposure 
E)  X- chromosome translocation that moves the w+ gene to a region of heterochromatin on another chromosome in some cells following X- ray exposure 
A)  X- chromosome deletion that deleted the w+ gene in some cells following X- ray exposure 
B)  X- chromosome inversion that moves the w+ gene to a different orientation on the chromosome in some cells following X- ray exposure 
C)  a mutation in the w+ gene following X- ray exposure that causes the gene to be overexpressed in a tissue- specific manner 
D)  a mutation in a somatic chromosome that causes the w+ gene to be translocated to the X- chromosomes following X- ray exposure 
E)  X- chromosome translocation that moves the w+ gene to a region of heterochromatin on another chromosome in some cells following X- ray exposure

Question 12

What structure will form during synapsis in Prophase I if there is a partial chromosome deletion or duplication?

Accepted Answer

A)  inversion loop 
B)  unpaired loop 
C)  solenoid 
D)  tetravalent complex 
E)  nucleosome 
A)  inversion loop 
B)  unpaired loop 
C)  solenoid 
D)  tetravalent complex 
E)  nucleosome

Question 13

A chromosome contains the following gene order: 
A B C D • E F G H 
Which of the following rearrangements represents a pericentric inversion?

Accepted Answer

A)  A B C D • E F G H 
B)  A F G H B C D • E 
C)  A F E • D C B G H 
D)  A C B D • E F G H 
E)  A B C D • E H G F 
A)  A B C D • E F G H 
B)  A F G H B C D • E 
C)  A F E • D C B G H 
D)  A C B D • E F G H 
E)  A B C D • E H G F

Question 14

What is the name of the structure formed when the 10 nm fibers of chromatin form a cylindrical filament of coiled nucleosomes?

Accepted Answer

The answer of What is the name of the structure...

Question 15

Which of the following best describes the histones associated with eukaryotic DNA?

Accepted Answer

A)  Along a 10,000 base pair segment of DNA, you expect to find twice as many molecules of histone protein H1, as histone protein H4. 
B)  The amino acid sequences of H4 vary extensively. 
C)  Within the nucleosome core particle, H1 is the most conserved and crucial histone protein. 
D)  The five types of histone proteins are small, basic proteins with a positive charge that allows them to bind to DNA. 
E)  Thousands of base pairs of DNA often wrap around each nucleosome core particle more than a dozen times. 
A)  Along a 10,000 base pair segment of DNA, you expect to find twice as many molecules of histone protein H1, as histone protein H4. 
B)  The amino acid sequences of H4 vary extensively. 
C)  Within the nucleosome core particle, H1 is the most conserved and crucial histone protein. 
D)  The five types of histone proteins are small, basic proteins with a positive charge that allows them to bind to DNA. 
E)  Thousands of base pairs of DNA often wrap around each nucleosome core particle more than a dozen times.

Question 16

In individuals heterozygous for a reciprocal balanced translocation, adjacent- 2 segregation of tetravalent structures is very rare since it requires which type of centromeres to move to the same pole of the cell at anaphase I?

Accepted Answer

The answer of In individuals heterozygous for a reciprocal balanced...

Question 17

Species A has 2n=16 chromosomes and species B has 2n=14 chromosomes. Offspring that are diploid for either 22 or 23 chromosomes are most likely?

Accepted Answer

A)  allohexaploids 
B)  allotriploids 
C)  autotetraploids of species B 
D)  autotriploids of species A 
E)  allotetraploids 
A)  allohexaploids 
B)  allotriploids 
C)  autotetraploids of species B 
D)  autotriploids of species A 
E)  allotetraploids

Which of the following is FALSE regarding individuals who are heterozygous for a large inversion?

How will the centromeres be distributed in the two recombinant chromosomes following a crossover in the inversion loop of a paracentric inversion heterozygote?

What is the term for the phenomenon that describes the significant reduction, or absence, of recombinant chromosomes in the gametes produced by inversion heterozygotes, when a crossover is within the inverted region?

Which type of chromosome has no p arms?

Describe two mechanisms for causing uniparental disomy, and explain how this chromosomal defect is involved in Prader- Willi syndrome and Angelman syndrome.

Eukaryotic chromosomes are a combination of proteins and DNA, which allows the cell to perform which four essential functions?

If you want to prevent chromatin loops from being anchored to the chromosome scaffold, which regions of the DNA would you target?

Which of the following is true of the gametes of a human female who has nondisjunction of her X chromosomes in meiosis I?

________is used to map genes in deleted chromosome regions by a method known as deletion mapping. It is a genetic phenomenon that occurs when a normally recessive allele is "unmasked" and expressed in the phenotype because the dominant allele on the homologous chromosome has been deleted.

What technique would you use to detect a target sequence in an intact chromosome using a labeled molecular probe?

The flies with variegated eye color had what abnormal chromosome structure?

What structure will form during synapsis in Prophase I if there is a partial chromosome deletion or duplication?

A chromosome contains the following gene order: A B C D • E F G H Which of the following rearrangements represents a pericentric inversion?

What is the name of the structure formed when the 10 nm fibers of chromatin form a cylindrical filament of coiled nucleosomes?

Which of the following best describes the histones associated with eukaryotic DNA?

In individuals heterozygous for a reciprocal balanced translocation, adjacent- 2 segregation of tetravalent structures is very rare since it requires which type of centromeres to move to the same pole of the cell at anaphase I?

Species A has 2n=16 chromosomes and species B has 2n=14 chromosomes. Offspring that are diploid for either 22 or 23 chromosomes are most likely?

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

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

Genetic Analysis of Quantitative Traits

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

Filters

Exam 10: Chromosome Exam Title Tbd

Which of the following is FALSE regarding individuals who are heterozygous for a large inversion?

How will the centromeres be distributed in the two recombinant chromosomes following a crossover in the inversion loop of a paracentric inversion heterozygote?

What is the term for the phenomenon that describes the significant reduction, or absence, of recombinant chromosomes in the gametes produced by inversion heterozygotes, when a crossover is within the inverted region?

Which type of chromosome has no p arms?

Describe two mechanisms for causing uniparental disomy, and explain how this chromosomal defect is involved in Prader- Willi syndrome and Angelman syndrome.

Eukaryotic chromosomes are a combination of proteins and DNA, which allows the cell to perform which four essential functions?

If you want to prevent chromatin loops from being anchored to the chromosome scaffold, which regions of the DNA would you target?

Which of the following is true of the gametes of a human female who has nondisjunction of her X chromosomes in meiosis I?

________is used to map genes in deleted chromosome regions by a method known as deletion mapping. It is a genetic phenomenon that occurs when a normally recessive allele is "unmasked" and expressed in the phenotype because the dominant allele on the homologous chromosome has been deleted.

What technique would you use to detect a target sequence in an intact chromosome using a labeled molecular probe?

The flies with variegated eye color had what abnormal chromosome structure?

What structure will form during synapsis in Prophase I if there is a partial chromosome deletion or duplication?

A chromosome contains the following gene order: A B C D • E F G H Which of the following rearrangements represents a pericentric inversion?

What is the name of the structure formed when the 10 nm fibers of chromatin form a cylindrical filament of coiled nucleosomes?

Which of the following best describes the histones associated with eukaryotic DNA?

In individuals heterozygous for a reciprocal balanced translocation, adjacent- 2 segregation of tetravalent structures is very rare since it requires which type of centromeres to move to the same pole of the cell at anaphase I?

Species A has 2n=16 chromosomes and species B has 2n=14 chromosomes. Offspring that are diploid for either 22 or 23 chromosomes are most likely?

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

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

Genetic Analysis of Quantitative Traits

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

Filters