Question 1

Why are chromosomes more easily visible under a microscope during Metaphase as compared to G2 phase?

Accepted Answer

A)  They become stained by natural pigments in the cell. 
B)  They are highly condensed in Metaphase. 
C)  There is twice as much DNA during Metaphase than during G2 phase. 
D)  Chromosomes are contained in the nucleus during G2 but not during metaphase. 
E)  Proteins that bind chromosomes during Metaphase are highly visible. 
A)  They become stained by natural pigments in the cell. 
B)  They are highly condensed in Metaphase. 
C)  There is twice as much DNA during Metaphase than during G2 phase. 
D)  Chromosomes are contained in the nucleus during G2 but not during metaphase. 
E)  Proteins that bind chromosomes during Metaphase are highly visible. B

Question 2

Which dosage compensation mechanism is employed by female placental mammals?

Accepted Answer

A)  X- inactivation 
B)  X chromosome crossing over 
C)  synteny 
D)  X nondisjunction 
E)  Y- inactivation 
A)  X- inactivation 
B)  X chromosome crossing over 
C)  synteny 
D)  X nondisjunction 
E)  Y- inactivation A

Question 3

How many PAIRS OF HOMOLOGOUS CHROMOSOMES are found in a human somatic cell nucleus?

Accepted Answer

23

Question 4

A cell in G1 phase has the option of entering which two phases?

Accepted Answer

The answer of A cell in G1 phase has the...

Question 5

Which of the following cells could be created from a mitotic division but would not be created during a normal meiosis?

Accepted Answer

A)  Cell G 
B)  Cell H 
C)  Cell K 
D)  Cell M 
E)  Cell P 
A)  Cell G 
B)  Cell H 
C)  Cell K 
D)  Cell M 
E)  Cell P

Question 6

The separation of sister chromatids during anaphase I of mitosis is known as chromosome__________ .

Accepted Answer

A)  disjunction 
B)  cytokinesis 
C)  synapsis 
D)  crossing over 
E)  karyokinesis 
A)  disjunction 
B)  cytokinesis 
C)  synapsis 
D)  crossing over 
E)  karyokinesis

Question 7

Of the trillions of cells in the human body, most are_________ , the cells that form organs and tissues.

Accepted Answer

The answer of Of the trillions of cells in the...

Question 8

Mitosis is a process of cell division that results in______ .

Accepted Answer

A)  two unique daughter cells 
B)  two identical daughter cells 
C)  four unique daughter cells 
D)  three identical daughter cells 
E)  four identical daughter cells 
A)  two unique daughter cells 
B)  two identical daughter cells 
C)  four unique daughter cells 
D)  three identical daughter cells 
E)  four identical daughter cells

Question 9

Which protein assures that sister chromatids of each chromosome remain firmly joined and can resist the pull of the kinetochore microtubules?

Accepted Answer

The answer of Which protein assures that sister chromatids of...

Question 10

A dihybrid has the genotype AaBb. The diagram depicts the chromosome composition of different cells from the animal. Which of the cells could represent a mature gamete?

Accepted Answer

A)  Cell G 
B)  Cell H 
C)  Cell K 
D)  Cell M 
E)  Cell P 
A)  Cell G 
B)  Cell H 
C)  Cell K 
D)  Cell M 
E)  Cell P

Question 11

Why might a cell undergo meiosis rather than mitosis?

Accepted Answer

A)  Diploid gametes are effective for asexual reproduction. 
B)  Haploid gametes can be genetically diverse. 
C)  Meiosis protects against mutations during reproduction. 
D)  It is more efficient to perform meiosis than mitosis. 
E)  Cells that perform meiosis can out- compete cells that perform mitosis. 
A)  Diploid gametes are effective for asexual reproduction. 
B)  Haploid gametes can be genetically diverse. 
C)  Meiosis protects against mutations during reproduction. 
D)  It is more efficient to perform meiosis than mitosis. 
E)  Cells that perform meiosis can out- compete cells that perform mitosis.

Question 12

Red- green color blindness is an X- linked recessive disorder. A woman with normal vision whose father was colorblind has children with a man with normal color vision. What is the probability that their first child will be colorblind?

Accepted Answer

A)  3/4 
B)  1/4 
C)  1 
D)  1/2 
E)  0 
A)  3/4 
B)  1/4 
C)  1 
D)  1/2 
E)  0

Question 13

Which of the following represents the chromosomes in a cell at the beginning of meiosis phase 2?

Accepted Answer

A)  Cell G 
B)  Cell H 
C)  Cell K 
D)  Cell M 
E)  Cell P 
A)  Cell G 
B)  Cell H 
C)  Cell K 
D)  Cell M 
E)  Cell P

Question 14

What is the short segment of the cell cycle during which genetic material is partitioned equally to two daughter cells?

Accepted Answer

The answer of What is the short segment of the...

Question 15

What separates in meiosis I to reduce the diploid number (2n) of chromosomes to the haploid number (n)?

Accepted Answer

homologous

Question 16

What are three important differences between mitosis and meiosis I?

Accepted Answer

In meiosis I, but not in mitosis, the fo

Question 17

Chromosomal nondisjunction of the X chromosome in female gametes of humans means that live offspring can include_______ .

Accepted Answer

A)  females with XX, and males with XY or XO 
B)  females with XX or XXX, and males with XY or XXY 
C)  females with XX or XXX, and males with XY or XO 
D)  females with XX or XO, and males with XY or OY 
E)  females with XX, and males with XY 
A)  females with XX, and males with XY or XO 
B)  females with XX or XXX, and males with XY or XXY 
C)  females with XX or XXX, and males with XY or XO 
D)  females with XX or XO, and males with XY or OY 
E)  females with XX, and males with XY

Question 18

If a trait is X- linked recessive, who would express the trait?

Accepted Answer

A)  females homozygous for the recessive allele and males hemizygous for the recessive allele 
B)  females homozygous for the dominant allele and males hemizygous for the recessive allele 
C)  the same proportions of females and males 
D)  females homozygous for the recessive allele and males hemizygous for the dominant allele 
E)  heterozygous females and males hemizygous for the dominant allele 
A)  females homozygous for the recessive allele and males hemizygous for the recessive allele 
B)  females homozygous for the dominant allele and males hemizygous for the recessive allele 
C)  the same proportions of females and males 
D)  females homozygous for the recessive allele and males hemizygous for the dominant allele 
E)  heterozygous females and males hemizygous for the dominant allele

Question 19

During which phase of the cell cycle does the cell actively transcribe and translate protein products necessary for normal cellular structure and function while not advancing the cell cycle?

Accepted Answer

A)  Gap 1 phase 
B)  Gap 2 phase 
C)  Interphase 
D)  Metaphase 
E)  Gap 0 phase 
A)  Gap 1 phase 
B)  Gap 2 phase 
C)  Interphase 
D)  Metaphase 
E)  Gap 0 phase

Question 20

If a trait is X- linked dominant, who would express the trait?

Accepted Answer

A)  significantly more females than males 
B)  females homozygous for the dominant allele and males hemizygous for the recessive allele 
C)  females homozygous for the recessive allele and males hemizygous for the dominant allele 
D)  females homozygous for the recessive allele and males hemizygous for the recessive allele 
E)  heterozygous females and males hemizygous for the dominant allele 
A)  significantly more females than males 
B)  females homozygous for the dominant allele and males hemizygous for the recessive allele 
C)  females homozygous for the recessive allele and males hemizygous for the dominant allele 
D)  females homozygous for the recessive allele and males hemizygous for the recessive allele 
E)  heterozygous females and males hemizygous for the dominant allele

Exam 3: Cell Division and Chromosome Heredity

Why are chromosomes more easily visible under a microscope during Metaphase as compared to G2 phase?

Which dosage compensation mechanism is employed by female placental mammals?

How many PAIRS OF HOMOLOGOUS CHROMOSOMES are found in a human somatic cell nucleus?

A cell in G1 phase has the option of entering which two phases?

Which of the following cells could be created from a mitotic division but would not be created during a normal meiosis?

The separation of sister chromatids during anaphase I of mitosis is known as chromosome__________ .

Of the trillions of cells in the human body, most are_________ , the cells that form organs and tissues.

Mitosis is a process of cell division that results in______ .

Which protein assures that sister chromatids of each chromosome remain firmly joined and can resist the pull of the kinetochore microtubules?

A dihybrid has the genotype AaBb. The diagram depicts the chromosome composition of different cells from the animal. Which of the cells could represent a mature gamete?

Why might a cell undergo meiosis rather than mitosis?

Red- green color blindness is an X- linked recessive disorder. A woman with normal vision whose father was colorblind has children with a man with normal color vision. What is the probability that their first child will be colorblind?

Which of the following represents the chromosomes in a cell at the beginning of meiosis phase 2?

What is the short segment of the cell cycle during which genetic material is partitioned equally to two daughter cells?

What separates in meiosis I to reduce the diploid number (2n) of chromosomes to the haploid number (n)?

What are three important differences between mitosis and meiosis I?

Chromosomal nondisjunction of the X chromosome in female gametes of humans means that live offspring can include_______ .

If a trait is X- linked recessive, who would express the trait?

During which phase of the cell cycle does the cell actively transcribe and translate protein products necessary for normal cellular structure and function while not advancing the cell cycle?

If a trait is X- linked dominant, who would express the trait?

The Molecular Basis of Heredity, Variation, and Evolution

Transmission Genetics

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

Genetic Analysis of Quantitative Traits

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

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