Question 1

Study the diagram below.This is one cell with three homologous pairs of chromosomes pictured in eight different patterns.
A.What is this diagram illustrating?
B.How many daughter nuclei will result from these cells?
C.How many different combinations of chromosomes are there?

Accepted Answer

A.This diagram illustrates the possible ...

Question 2

If a cell contains 12 chromosomes at the end of meiosis I,how many chromosomes will the daughter cells contain at the end of meiosis II?

Accepted Answer

A)  3
B)  6
C)  12
D)  24E) None of the above
F) All of the above

Question 3

Dogs have 39 chromosome pairs.Based on this information,determine which of the following statements are true.Select all that apply.

Accepted Answer

A)  The haploid number for dogs is 39.
B)  At the end of mitosis,a cell would have 78 chromosomes.
C)  At the end of prophase I,a cell would have 78 chromosomes.
D)  At the end of prophase II,a cell would have 39 chromosomes.
E)  Meiosis does not occur in dogs.F) D) and E)
G) A) and C)

Question 4

The cell formed after fertilization of an egg by a sperm is called a(n)

Accepted Answer

A)  gamete.
B)  sperm cell.
C)  zygote.
D)  egg cell.
E)  ovum.F) B) and C)
G) A) and C)

Question 5

Characterize the following statements about changes in chromosome number and structure as True or False.
-Primary nondisjunction occurs during meiosis II when the sister chromatids fail to separate and both daughter chromosomes go in the same gamete.

Accepted Answer

A) True 
 B)False

Question 6

Spindle formation,centrosome migration,the fragmentation of the nuclear envelope,and the disappearance of the nucleolus are characteristic of prophase I of meiosis but not prophase of mitosis.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following statements correctly compares the events of meiosis and mitosis?

Accepted Answer

A)  During metaphase I of meiosis,the bivalents are present at the metaphase plate; during metaphase of mitosis,the duplicated chromosomes are at the metaphase plate.
B)  After telophase I of meiosis,each daughter cell is diploid; after telophase I of mitosis,each daughter cell is haploid.
C)  During prophase II of meiosis,the homologous chromosomes cross-over; there is no crossing-over during prophase of mitosis.
D)  During anaphase I of meiosis,the homologues pairs separate; during anaphase of mitosis,the homologous pairs stay together.E) B) and C)
F) None of the above

Question 8

Characterize the following statements about changes in chromosome number and structure as True or False.
-A change in the chromosome number resulting from nondisjunction is called euploidy.

Accepted Answer

A) True 
 B)False

Question 9

During which stage of meiosis are the bivalents arranged along the equator of the spindle?

Accepted Answer

A)  prophase I
B)  metaphase II
C)  anaphase II
D)  prophase II
E)  metaphase IF) B) and C)
G) None of the above

Question 10

Which statement is NOT true about homologous chromosomes in meiosis I?

Accepted Answer

A)  Homologous chromosomes form tetrads.
B)  Homologous chromosomes separate and go to different daughter cells.
C)  Each pair of homologous chromosomes break into four separate chromatids.
D)  Homologous chromosomes exchange genetic material between nonsister chromatids.
E)  Homologous chromosomes interact with the spindle as if they were one chromosome.F) All of the above
G) C) and E)

Question 11

Characterize the following statements about changes in chromosome number and structure as True or False.
-Sex chromosome aneuploids are better tolerated and have a better chance of producing survivors.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is NOT true about daughter cells of mitosis or meiosis?

Accepted Answer

A)  In meiosis,daughter cells are haploid.
B)  In meiosis,there are four daughter cells.
C)  In mitosis,there are two daughter cells.
D)  In mitosis,the daughter cells are genetically identical.
E)  In meiosis,the daughter cells are genetically identical.F) B) and D)
G) B) and C)

Question 13

The following picture depicts which of the following changes in chromosome structure?

Accepted Answer

A)  deletion
B)  duplication
C)  translocation
D)  aneuploidyE) A) and C)
F) B) and D)

Question 14

At which stage of meiosis is each chromosome composed of a single chromatid?

Accepted Answer

A)  prophase I
B)  metaphase II
C)  telophase II
D)  prophase II
E)  telophase IF) B) and C)
G) C) and E)

Question 15

Study the figure to answer the following questions.  A.Is this cell going through mitosis or meiosis?
B.Explain your answer.
C.Identify the stage.

Accepted Answer

A.The cell is in the metaphase I of meio...

Question 16

Another name for a tetrad is a(n)

Accepted Answer

A)  homologue.
B)  bivalent.
C)  oocyte.
D)  gamete.
E)  polar body.F) B) and D)
G) All of the above

Question 17

Identify which event will occur during prophase I of meiosis but does not occur during prophase of mitosis.

Accepted Answer

A)  Bivalents will form.
B)  Nuclear envelope will dissolve.
C)  Spindles form as centrosomes migrate away from each other.
D)  Chromatin will condense into chromosomes.E) All of the above
F) A) and D)

Question 18

Oogenesis always involves an equal division of cell contents in the formation of an egg and polar bodies.

Accepted Answer

A) True 
 B)False

Question 19

Aneuploidy is a change in the number of chromosomes resulting from nondisjunction during meiosis.

Accepted Answer

A) True 
 B)False

Question 20

During ________,the homologous chromosome pairs independently align themselves at the equator of the cell.

Accepted Answer

A)  independent assortment
B)  anaphase I
C)  crossing-over
D)  mitosisE) A) and B)
F) B) and C)

Exam 10: Meiosis and Sexual Reproduction

Characterize the following statements about changes in chromosome number and structure as True or False. -A change in the chromosome number resulting from nondisjunction is called euploidy.

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Characterize the following statements about changes in chromosome number and structure as True or False. -Sex chromosome aneuploids are better tolerated and have a better chance of producing survivors.

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Spindle formation,centrosome migration,the fragmentation of the nuclear envelope,and the disappearance of the nucleolus are characteristic of prophase I of meiosis but not prophase of mitosis.

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Study the figure to answer the following questions. A.Is this cell going through mitosis or meiosis? B.Explain your answer. C.Identify the stage.

Correct AnswerverifiedA.The cell is in the metaphase I of meio...View AnswerShow Answer

Dogs have 39 chromosome pairs.Based on this information,determine which of the following statements are true.Select all that apply.

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Another name for a tetrad is a(n)

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Identify which event will occur during prophase I of meiosis but does not occur during prophase of mitosis.

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Which of the following statements correctly compares the events of meiosis and mitosis?

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Characterize the following statements about changes in chromosome number and structure as True or False. -Primary nondisjunction occurs during meiosis II when the sister chromatids fail to separate and both daughter chromosomes go in the same gamete.

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Which of the following is NOT true about daughter cells of mitosis or meiosis?

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Which statement is NOT true about homologous chromosomes in meiosis I?

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Aneuploidy is a change in the number of chromosomes resulting from nondisjunction during meiosis.

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During ________,the homologous chromosome pairs independently align themselves at the equator of the cell.

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At which stage of meiosis is each chromosome composed of a single chromatid?

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Study the diagram below.This is one cell with three homologous pairs of chromosomes pictured in eight different patterns. A.What is this diagram illustrating? B.How many daughter nuclei will result from these cells? C.How many different combinations of chromosomes are there?

Correct AnswerverifiedA.This diagram illustrates the possible ...View AnswerShow Answer

The following picture depicts which of the following changes in chromosome structure?

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If a cell contains 12 chromosomes at the end of meiosis I,how many chromosomes will the daughter cells contain at the end of meiosis II?

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Oogenesis always involves an equal division of cell contents in the formation of an egg and polar bodies.

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During which stage of meiosis are the bivalents arranged along the equator of the spindle?

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The cell formed after fertilization of an egg by a sperm is called a(n)

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A.The cell is in the metaphase I of meio...
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A.This diagram illustrates the possible ...
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