Question 1

All but which one of the following results from nondisjunction?

Accepted Answer

A)   trisomy
B)   diploidy
C)   monosomy
D)   polyploidy
E)   Down syndromeF) A) and E)
G) A) and C)

Question 2

Camels have a diploid chromosome number of 70. At prophase II, each cell would contain how many tetrads?

Accepted Answer

A)   0
B)   35
C)   70
D)   140
E)   280F) A) and B)
G) All of the above

Question 3

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; 240F) A) and E)
G) None of the above A

Question 4

For the figure shown here, indicate the correct stage of meiosis and whether the cell is haploid (n)  or diploid (2n) .

Accepted Answer

A)   metaphase II, 2n
B)   metaphase II, n
C)   metaphase I, 2n
D)   metaphase I, n
E)   anaphase I, 2nF) A) and B)
G) None of the above

Question 5

The failure of sister chromatids to separate in one of the cells during meiosis II would result in how many normal gametes?

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   4F) A) and D)
G) B) and C)

Question 6

Interphase differs from interkinesis because

Accepted Answer

A)   DNA is duplicated during interphase, but not during interkinesis.
B)   DNA is duplicated during interkinesis, but not during interphase.
C)   homologous chromosomes separate during interkinesis, but not during interphase.
D)   homologous chromosomes separate during interphase, but not during interkinesis.
E)   interkinesis only occurs during mitosis, while interphase occurs during both meiosis and mitosis.F) A) and B)
G) A) and E)

Question 7

A tetrad consists of

Accepted Answer

A)   two homologous chromosomes each comprised of two sister chromatids.
B)   two homologous chromosomes each comprised of two nonsister chromatids.
C)   one duplicated chromosome consisting of two nonsister chromatids.
D)   one duplicated chromosome consisting of two sister chromatids.
E)   two homologous chromosomes consisting of a single DNA strand each.F) C) and D)
G) B) and C)

Question 8

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, XOF) A) and B)
G) A) and E)

Question 9

In each gamete following telophase II, how many copies of each gene is/are present?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   8F) All of the above
G) A) and D)

Question 10

For the figure shown here, indicate the correct stage of meiosis and the whether the cell is haploid (n)  or diploid (2n) .

Accepted Answer

A)   prophase I, n
B)   prophase II, 2n
C)   metaphase I, n
D)   metaphase II, 2n
E)   prophase II, nF) C) and D)
G) B) and E)

Question 11

The first 22 pairs of chromosomes are called ________ while the 23rd pair are known as the __________ chromosomes, which code for gender.

Accepted Answer

A)   homologous; autosomes
B)   autosomes; homologous
C)   diploid; haploid
D)   autosomes: sex
E)   sex; autosomesF) A) and C)
G) A) and B)

Question 12

An individual with the karyotype 48, XYYY would have how many Barr bodies?

Accepted Answer

A)   0
B)   1
C)   2
D)   3
E)   4F) A) and E)
G) B) and E) A

Question 13

Klinefelter syndrome can result fromnondisjunction 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.F) B) and D)
G) A) and B)

Question 14

Which of the following processes and products are paired correctly?

Accepted Answer

A)   spermatogenesis - 2n zygote
B)   oogenesis - 2n zygote
C)   oogenesis - 1n gamete
D)   meiosis - 2n zygote
E)   mitosis - 1n gameteF) A) and D)
G) A) and E)

Question 15

For the figure shown here, indicate the correct stage of meiosis and whether the cell is haploid (n)  or diploid (2n) .

Accepted Answer

A)   anaphase I, 2n
B)   anaphase II, n
C)   anaphase I, n
D)   anaphase II, 2n
E)   neither anaphase I or anaphase II.F) D) and E)
G) A) and E)

Question 16

You are looking at a cell under a microscope and see what appears to be several "X" structures being pulled to each side of the cell. What stage of meiosis are you looking at?

Accepted Answer

A)   anaphase I
B)   prophase I
C)   prophase II
D)   metaphase I
E)   anaphase IIF) B) and E)
G) A) and D)

Question 17

Following meiosis I, the daughter cells are ________; following meiosis II, the daughter cells are ________; and following fertilization and 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; diploidF) A) and C)
G) A) and B)

Question 18

Which of the following processes contributes to creating genetic variability in the offspring?

Accepted Answer

A)   crossing-over
B)   independent assortment of chromosomes
C)   pairing of homologous chromosomes
D)   having different alleles of the same gene
E)   All of the answers describe processes that contribute to genetic variability.F) A) and E)
G) A) and D) E

Question 19

Swyer syndrome (46, XY, female appearance) , would most likely result from

Accepted Answer

A)   nondisjunction during meiosis I in the female parent.
B)   nondisjunction during meiosis I in the male parent.
C)   nondisjunction during meiosis II in the female parent.
D)   nondisjunction during meiosis II in the male parent.
E)   normal disjunction during meiosis, but deletion of a portion of the Y chromosome in the male parent.F) B) and D)
G) C) and E)

Question 20

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

Exam 9: Meiosis and the Genetic Basis of Sexual Reproduction

All but which one of the following results from nondisjunction?

Correct AnswerverifiedShow Answer

Camels have a diploid chromosome number of 70. At prophase II, each cell would contain how many tetrads?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedA

For the figure shown here, indicate the correct stage of meiosis and whether the cell is haploid (n) or diploid (2n) .

Correct AnswerverifiedShow Answer

The failure of sister chromatids to separate in one of the cells during meiosis II would result in how many normal gametes?

Correct AnswerverifiedShow Answer

Interphase differs from interkinesis because

Correct AnswerverifiedShow Answer

A tetrad consists of

Correct AnswerverifiedShow Answer

Turner syndrome is associated with which of the following karyotypes?

Correct AnswerverifiedShow Answer

In each gamete following telophase II, how many copies of each gene is/are present?

Correct AnswerverifiedShow Answer

For the figure shown here, indicate the correct stage of meiosis and the whether the cell is haploid (n) or diploid (2n) .

Correct AnswerverifiedShow Answer

The first 22 pairs of chromosomes are called ________ while the 23rd pair are known as the __________ chromosomes, which code for gender.

Correct AnswerverifiedShow Answer

An individual with the karyotype 48, XYYY would have how many Barr bodies?

Correct AnswerverifiedA

Klinefelter syndrome can result fromnondisjunction during

Correct AnswerverifiedShow Answer

Which of the following processes and products are paired correctly?

Correct AnswerverifiedShow Answer

For the figure shown here, indicate the correct stage of meiosis and whether the cell is haploid (n) or diploid (2n) .

Correct AnswerverifiedShow Answer

You are looking at a cell under a microscope and see what appears to be several "X" structures being pulled to each side of the cell. What stage of meiosis are you looking at?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following processes contributes to creating genetic variability in the offspring?

Correct AnswerverifiedE

Swyer syndrome (46, XY, female appearance) , would most likely result from

Correct AnswerverifiedShow Answer

Which of the following human syndromes is a monosomy?

Correct AnswerverifiedShow Answer

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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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A

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The first 22 pairs of chromosomes are called while the 23rd pair are known as the __ chromosomes, which code for gender.

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A

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

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E

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