Question 1

Which event occurs in mitosis but NOT in meiosis?

Accepted Answer

A)  bipolar spindle formation
B)  tethering of chromosomes to microtubules
C)  chromosomes dragged to poles by microtubules
D)  nuclear envelopes breaking up and reforming
E)  none of theseF) C) and D)
G) C) and E)

Question 2

Meiosis typically results in the production of

Accepted Answer

A)  two diploid cells.
B)  four diploid cells.
C)  four haploid cells.
D)  two haploid cells.
E)  one triploid cell.F) C) and E)
G) B) and D)

Question 3

The mature ovum is produced by maturation of the

Accepted Answer

A)  oogonium.
B)  primary oocyte.
C)  secondary polar body.
D)  polar body I.
E)  none of these.F) All of the above
G) None of the above

Question 4

Chromatids are

Accepted Answer

A)  attached at the centriole.
B)  a pair of chromosomes, one from the mother and one from the father.
C)  attached at their centromeres.
D)  identical until crossing over occurs.
E)  attached at their centromeres and are identical until crossing over occurs.F) A) and E)
G) None of the above

Question 5

Sexual reproduction

Accepted Answer

A)  leads to uniform characteristics within a population.
B)  results in new combinations of genetic traits.
C)  creates genetic clones.
D)  requires less tissue differentiation than asexual reproduction.
E)  produces genetic clones and requires less tissue differentiation than asexual reproduction.F) A) and C)
G) A) and D)

Question 6

Which of the following will NOT develop into one or more gametes?

Accepted Answer

A)  spermatogonium
B)  polar bodies
C)  primary oocyte
D)  spermatid
E)  secondary spermatocyteF) B) and C)
G) A) and E)

Question 7

Paired homologous chromosomes are found at the spindle equator during

Accepted Answer

A)  metaphase I.
B)  telophase I.
C)  prophase II.
D)  metaphase II.
E)  anaphase II.F) C) and D)
G) B) and E)

Question 8

Through meiosis

Accepted Answer

A)  alternate forms of genes are shuffled.
B)  parental DNA is divided and distributed to forming gametes.
C)  the diploid chromosome number is reduced to haploid.
D)  offspring are provided with new gene combinations.
E)  all of these occur.F) B) and D)
G) None of the above

Question 9

Asexually produced daughter cells are

Accepted Answer

A)  identical to each other.
B)  identical to the parental cell.
C)  different from the parental cell.
D)  different from each other.
E)  identical to each other and to the parental cell.F) None of the above
G) A) and B)

Question 10

Which of the following does NOT produce variation?

Accepted Answer

A)  crossing over
B)  random alignment of chromosomes during meiosis
C)  asexual reproduction
D)  genetic recombination of alleles
E)  sexual reproductionF) B) and D)
G) C) and D)

Question 11

A pine tree is called a sporophyte because it

Accepted Answer

A)  develops from a germinated spore.
B)  produces spores by meiosis.
C)  is haploid.
D)  undergoes fertilization.
E)  reproduces by both sexual and asexual means.F) A) and C)
G) A) and E)

Question 12

If meiosis did NOT occur in sexually reproducing organisms,

Accepted Answer

A)  growth of the zygote would be halted.
B)  mitosis would be sufficient.
C)  gametes would be haploid.
D)  the chromosome number would double in each generation.
E)  eggs would be haploid, but sperm would be diploid.F) D) and E)
G) A) and E)

Question 13

Duplicated chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?

Accepted Answer

A)  mother
B)  daughter
C)  sister
D)  homologous
E)  haploidF) C) and D)
G) A) and E) C

Question 14

The Red Queen hypothesis may explain

Accepted Answer

A)  why asexual reproduction is easier and faster than sexual reproduction.
B)  why aphids seasonally alternate parthenogenesis with sexual reproduction.
C)  the existence of all-female species of animals.
D)  the connection between species interactions and sexual reproduction.
E)  why meiosis and fertilization alternate during sexual reproduction.F) A) and C)
G) All of the above

Question 15

Crossing over

Accepted Answer

A)  generally results in binary fission.
B)  involves centrioles.
C)  involves breakages and exchanges between sister chromatids.
D)  results in new combinations of alleles being channeled into the daughter cells.
E)  does all of these.F) B) and D)
G) All of the above

Question 16

Which of the following is TRUE at the end of telophase I in corn (20 chromosomes) ?

Accepted Answer

A)  Each cell has 10 chromosomes.
B)  Each chromosome is double-stranded.
C)  Centromeres connect sister chromatids.
D)  Each cell has 10 chromosomes, and each chromosome is double-stranded.
E)  Each cell has 10 chromosomes, each chromosome is double-stranded, and centromeres connect sister chromatids.F) C) and D)
G) A) and B)

Question 17

The above figure represents

Accepted Answer

A)  individual genes from an asexual worm.
B)  maternal chromosomes that are identical.
C)  paternal chromosomes that are identical.
D)  both maternal and paternal chromosomes.
E)  none of these.F) A) and E)
G) C) and E) D

Question 18

Sister chromatids are separated from each other during

Accepted Answer

A)  metaphase I.
B)  anaphase I.
C)  telophase II.
D)  anaphase II.
E)  metaphase II.F) A) and D)
G) D) and E)

Question 19

Which of the following is NOT an advantage of sexual reproduction?

Accepted Answer

A)  It offers an alternative adaptation in a changing environment.
B)  It is adaptive in coevolution situations.
C)  It is energetically costly.
D)  The genetic variation it provides may be useful in the future.
E)  It yields offspring with novel combinations of traits.F) B) and E)
G) A) and E) C

Question 20

Which of the following events does NOT occur in prophase II but does occur in prophase I?

Accepted Answer

A)  crossing over
B)  pairing of homologues
C)  spindle formation
D)  crossing over and pairing of homologues only
E)  crossing over, pairing of homologues, and spindle formationF) A) and B)
G) All of the above

Exam 10: Meiosis and Sexual Reproduction

Which event occurs in mitosis but NOT in meiosis?

Correct AnswerverifiedShow Answer

Meiosis typically results in the production of

Correct AnswerverifiedShow Answer

The mature ovum is produced by maturation of the

Correct AnswerverifiedShow Answer

Chromatids are

Correct AnswerverifiedShow Answer

Sexual reproduction

Correct AnswerverifiedShow Answer

Which of the following will NOT develop into one or more gametes?

Correct AnswerverifiedShow Answer

Paired homologous chromosomes are found at the spindle equator during

Correct AnswerverifiedShow Answer

Through meiosis

Correct AnswerverifiedShow Answer

Asexually produced daughter cells are

Correct AnswerverifiedShow Answer

Which of the following does NOT produce variation?

Correct AnswerverifiedShow Answer

A pine tree is called a sporophyte because it

Correct AnswerverifiedShow Answer

If meiosis did NOT occur in sexually reproducing organisms,

Correct AnswerverifiedShow Answer

Duplicated chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?

Correct AnswerverifiedC

The Red Queen hypothesis may explain

Correct AnswerverifiedShow Answer

Crossing over

Correct AnswerverifiedShow Answer

Which of the following is TRUE at the end of telophase I in corn (20 chromosomes) ?

Correct AnswerverifiedShow Answer

The above figure represents

Correct AnswerverifiedD

Sister chromatids are separated from each other during

Correct AnswerverifiedShow Answer

Which of the following is NOT an advantage of sexual reproduction?

Correct AnswerverifiedC

Which of the following events does NOT occur in prophase II but does occur in prophase I?

Correct AnswerverifiedShow Answer

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C

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D

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C

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