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BSC 2010 Module 9 Quiz Meiosis

front 1

Which of these is a karyotype?

Answers:

  1. a display of all of the cell types in an organism
  2. organized images of a cell’s chromosomes
  3. the appearance of an organism
  4. a display of a cell’s mitotic stages

back 1

2

front 2

Crossing over normally takes place during which of the following processes?

Answers:

  1. meiosis II
  2. meiosis I
  3. mitosis
  4. mitosis and meiosis II

back 2

2

front 3

Centromeres split and sister chromatids migrate to opposite poles in meiosis _____.

Answers:

  1. anaphase I
  2. telophase I
  3. anaphase II
  4. telophase II

back 3

3

front 4

Which diagram represents anaphase II of meiosis?

Answers:

  1. I
  2. III
  3. IV
  4. V

back 4

4

front 5

Which of the following defines a genome?

Answers:

  1. the complete set of an organism's polypeptides
  2. the complete set of a species' polypeptides
  3. a karyotype
  4. the complete set of an organism's genes and other DNA sequences

back 5

4

front 6

Which of the following is true of a species that has a chromosome number of 2n = 16?

Answers:

  1. The species is diploid with 32 chromosomes per cell.
  2. The species has 16 sets of chromosomes per cell.
  3. Each diploid cell has eight homologous pairs.
  4. A gamete from this species has four chromosomes.

back 6

3

front 7

Which of the following can occur by the process of meiosis but not mitosis?

Answers:

  1. Haploid cells fuse to form diploid cells.
  2. Haploid cells multiply into more haploid cells.
  3. Diploid cells form haploid cells.
  4. A diploid cell combines with a haploid cell.

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3

front 8

If meiosis produces haploid cells, how is the diploid number restored for those organisms that spend most of their life cycle in the diploid state?

Answers:

  1. DNA replication
  2. reverse transcription
  3. synapsis
  4. fertilization

back 8

4

front 9

The human X and Y chromosomes _____.

Answers:

  1. are both present in every somatic cell of males and females
  2. are the same size and have the same number of genes
  3. include genes that determine an individual's sex
  4. are called autosomes

back 9

3

front 10

Sister chromatids separate from each other during _____.

Answers:

  1. meiosis I only
  2. meiosis II only
  3. mitosis and meiosis I
  4. mitosis and meiosis II

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4

front 11

How do cells at the completion of meiosis compare with cells that are in prophase of meiosis I? They have _____.

Answers:

  1. half the number of chromosomes and half the amount of DNA.
  2. the same number of chromosomes and half the amount of DNA.
  3. half the number of chromosomes and one-fourth the amount of DNA.
  4. half the amount of cytoplasm and twice the amount of DNA.

back 11

3

front 12

Which of the following happens at the conclusion of meiosis I?

Answers:

  1. Homologous chromosomes of a pair are separated from each other.
  2. The chromosome number per cell remains the same.
  3. Sister chromatids are separated.
  4. Four daughter cells are formed.

back 12

1

front 13

Centromeres of sister chromatids disjoin and chromatids separate.

  1. Telophase II
  2. Anaphase I
  3. Telophase I
  4. Anaphase II

back 13

4

front 14

Homologous chromosomes are aligned at the equator of the spindle.

  1. Metaphase II
  2. Anaphase I
  3. Telophase I
  4. Metaphase I

back 14

4

front 15

Which diagram represents anaphase I of meiosis?

Answers:

  1. I
  2. II
  3. IV
  4. V

back 15

1

front 16

A given organism has 46 chromosomes in its karyotype. Therefore, we can conclude that it must _____.

Answers:

  1. be human
  2. be an animal
  3. reproduce sexually
  4. have gametes with 23 chromosomes

back 16

4

front 17

For the duration of meiosis I, each chromosome _____.

Answers:

  1. is paired with a homologous chromosome
  2. consists of two sister chromatids joined by a centromere
  3. consists of a single strand of DNA
  4. is joined with its homologous pair to form a synaptonemal complex

back 17

2

front 18

In meiosis, homologous chromosomes are separated during _____.

Answers:

  1. anaphase II
  2. prophase I
  3. mitosis
  4. anaphase I

back 18

4

front 19

Homologous chromosomes _____.

Answers:

  1. are identical
  2. carry information for the same traits
  3. carry the same alleles
  4. align on the metaphase plate in meiosis II

back 19

2

front 20

After telophase I of meiosis, the chromosomal makeup of each daughter cell is _____.

Answers:

  1. diploid, and the chromosomes are each composed of a single chromatid
  2. diploid, and the chromosomes are each composed of two chromatids
  3. haploid, and the chromosomes are each composed of a single chromatid
  4. haploid, and the chromosomes are each composed of two chromatids

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4