Question 1

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) A) and B)
G) All of the above

Question 2

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 D)
F) C) and D)

Question 3

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 4

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) All of the above
F) A) and C)

Question 5

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 6

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) D) and E)
G) A) and E)

Question 7

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

Accepted Answer

A) True 
 B)False

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 ________,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) All of the above
F) A) and B)

Question 10

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) A) and B)
F) None of the above

Question 11

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

Accepted Answer

A)  deletion
B)  duplication
C)  translocation
D)  aneuploidyE) None of the above
F) A) and D)

Question 12

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) A) and C)
G) A) and B)

Question 13

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 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) C) and E)
G) B) and D)

Question 15

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 16

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 17

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) A) and E)
G) B) and C)

Question 18

Another name for a tetrad is a(n)

Accepted Answer

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

Question 19

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) A) and B)
G) A) and C)

Question 20

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

Exam 10: Meiosis and Sexual Reproduction

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

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

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

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

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

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

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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

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

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

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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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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

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

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Another name for a tetrad is a(n)

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

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