Question 1

It would be possible for a male and a female to have exactly the same ________, but they would have to differ in ________.

Accepted Answer

A)   diploid chromosomes; haploid chromosomes
B)   autosomes; sex chromosomes
C)   homologues; autosomes
D)   karyotype; sex chromosomes
E)   karyotype; autosomes

Question 2

Which of the following is not a function of meiosis?

Accepted Answer

A)   cause an organism to grow
B)   create genetic variability
C)   reduce the chromosome number in gametes
D)   keep the chromosome number constant from one generation to the next
E)   produce gametes

Question 3

Turner syndrome is associated with which of the following karyotypes?

Accepted Answer

A)   47, XXY
B)   47, XXX
C)   46, XY
D)   47, XY, trisomy 21
E)   45, XO

Question 4

A human egg with 22 chromosomes that is fertilized by a normal sperm will result in

Accepted Answer

A)   a zygote with trisomy.
B)   a zygote with disomy.
C)   a zygote with monosomy.
D)   a zygote with normal chromosome number.
E)   nondisjunction during subsequent mitosis.

Question 5

For the figure shown here, indicate the correct stage of meiosis and diploid chromosome number.

Accepted Answer

A)   metaphase II, 2n=4
B)   metaphase II, 2n=2
C)   metaphase II, 2n=8
D)   metaphase I, 2n=4
E)   metaphase I, 2n=8

Question 6

All but which one of the following results from nondisjunction?

Accepted Answer

A)   trisomy
B)   diploidy
C)   monosomy
D)   polyploidy
E)   Down syndrome

Question 7

Which of the diagrams best illustrates the appearance of a chromosome or chromosome pair at the end of prophase I?

Accepted Answer

A)   diagram 1
B)   diagram 2
C)   diagram 3
D)   diagram 4
E)   diagram 5

Question 8

During meiosis II,

Accepted Answer

A)   homologous chromosomes line up separately, with sister chromatids facing the same spindle pole.
B)   chromosomes line up separately, with sister chromatids facing opposite spindle poles.
C)   chromosomes line up separately, with sister chromatids facing the same spindle pole.
D)   homologous chromosomes line up separately, with sister chromatids facing opposite spindle poles.
E)   homologous chromosomes line up together, with sister chromatids facing opposite spindle poles.

Question 9

During which stage of meiosis will the pairs of homologous chromosomes line up?

Accepted Answer

A)   metaphase I
B)   metaphase II
C)   metaphase
D)   anaphase I
E)   prophase II

Question 10

For the figure shown here, indicate the correct stage of meiosis and diploid chromosome number.

Accepted Answer

A)   anaphase I, 2n=16
B)   anaphase II, 2n=16
C)   anaphase I, 2n=8
D)   anaphase II, 2n=8
E)   anaphase II, 2n=4

Question 11

Goats have a diploid chromosome number of 60. At prophase I, each cell would have ________ tetrads present, for a total of ________ chromatids.

Accepted Answer

A)   30; 120
B)   30; 60
C)   60; 120
D)   60; 240
E)   30; 240

Question 12

Which statement best describes how the members of a tetrad are separated during meiosis I?

Accepted Answer

A)   The two homologous chromosomes of a tetrad separate into different daughter nuclei.
B)   The sister chromatids of each chromosome separate into different daughter nuclei.
C)   The nonsister chromatids of each tetrad separate into different daughter nuclei.
D)   The two homologous chromosomes of a tetrad separate into one of two daughter nuclei.
E)   The two homologous chromosomes of a tetrad are duplicated and separate into each daughter nucleus.

Question 13

Following meiosis I, the daughter cells are ________; following meiosis II, the daughter cells are ________; and following mitosis, the daughter cells are ________.

Accepted Answer

A)   diploid; haploid; diploid
B)   diploid; diploid; haploid
C)   haploid; haploid; diploid
D)   haploid; haploid; haploid
E)   diploid; diploid; diploid

Question 14

During prophase II, a diploid organism contains how many copies of each gene?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   8

Question 15

During G1 stage of interphase, a diploid organism contains how many copies of each gene?

Accepted Answer

A)   1
B)   2
C)   4
D)   8
E)   16

Question 16

Klinefelter syndrome can result from nondisjunction during

Accepted Answer

A)   meiosis I in the female parent.
B)   meiosis I in the male parent.
C)   meiosis I in either female parent.
D)   meiosis I or II in the male parent.
E)   meiosis I or II in either parent.

Question 17

Armadillos have a diploid chromosome number of 64. At prophase I, an armadillo's cell would have ________ tetrads present.

Accepted Answer

A)   16
B)   32
C)   64
D)   80
E)   128

Question 18

Which of the following human syndromes is a monosomy?

Accepted Answer

A)   Turner syndrome
B)   Klinefelter syndrome
C)   Down syndrome
D)   Swyer syndrome
E)   Barr body syndrome

Question 19

For the figure shown here, indicate the correct stage of meiosis and the diploid number of the cell.

Accepted Answer

A)   prophase I, 2n=4
B)   prophase II, 2n=4
C)   metaphase I, 2n=4
D)   metaphase II, 2n=2
E)   anaphase II, 2n=2

Question 20

Which of the following is not correct about crossing-over?

Accepted Answer

A)   Crossing-over is preceded by a process known as synapsis, where homologous chromosomes attach to each other.
B)   Crossing-over results in greater genetic variability in offspring.
C)   Crossing-over is only detectable when it occurs between sister chromatids.
D)   Crossing-over occurs during prophase I when homologous chromosomes line up prior to separation.
E)   In humans, crossing-over occurs an average of approximately two events per chromosome.

Exam 9: Meiosis and the Genetic Basis of Sexual Reproduction

During prophase II, a diploid organism contains how many copies of each gene?

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Which statement best describes how the members of a tetrad are separated during meiosis I?

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For the figure shown here, indicate the correct stage of meiosis and the diploid number of the cell.

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Klinefelter syndrome can result from nondisjunction during

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For the figure shown here, indicate the correct stage of meiosis and diploid chromosome number.

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During meiosis II,

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During G1 stage of interphase, a diploid organism contains how many copies of each gene?

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It would be possible for a male and a female to have exactly the same ________, but they would have to differ in ________.

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Turner syndrome is associated with which of the following karyotypes?

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For the figure shown here, indicate the correct stage of meiosis and diploid chromosome number.

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Following meiosis I, the daughter cells are ________; following meiosis II, the daughter cells are ________; and following mitosis, the daughter cells are ________.

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Goats have a diploid chromosome number of 60. At prophase I, each cell would have ________ tetrads present, for a total of ________ chromatids.

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During which stage of meiosis will the pairs of homologous chromosomes line up?

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Which of the following human syndromes is a monosomy?

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Armadillos have a diploid chromosome number of 64. At prophase I, an armadillo's cell would have ________ tetrads present.

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Which of the following is not a function of meiosis?

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Which of the following is not correct about crossing-over?

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Which of the diagrams best illustrates the appearance of a chromosome or chromosome pair at the end of prophase I?

Correct AnswerverifiedShow Answer

All but which one of the following results from nondisjunction?

Correct AnswerverifiedShow Answer

A human egg with 22 chromosomes that is fertilized by a normal sperm will result in

Correct AnswerverifiedShow Answer

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During G₁ stage of interphase, a diploid organism contains how many copies of each gene?

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It would be possible for a male and a female to have exactly the same , but they would have to differ in .

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Following meiosis I, the daughter cells are ; following meiosis II, the daughter cells are ; and following mitosis, the daughter cells are .

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Goats have a diploid chromosome number of 60. At prophase I, each cell would have tetrads present, for a total of chromatids.

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