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Which of the following represents the correct order of the phases of the cell cycle?
A) G1 -> G2 -> S -> M
B) G1 -> G2 -> M -> S
C) G1 -> S -> G2 -> M
D) G1 -> S -> M -> G2
E) G1 -> M -> G2 -> S
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C) G1 -> S -> G2 -> M
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The division of the cytoplasm is called
A) synapsis.
B) mitosis.
C) meiosis.
D) cytokinesis.
E) cytogenetics.
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D) cytokinesis.
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Which of the following represents the correct order of the phases of mitosis?
A) prophase -> anaphase -> metaphase -> telophase
B) prophase -> metaphase -> anaphase -> telophase
C) prophase -> metaphase -> telophase -> anaphase
D) metaphase -> prophase -> telophase -> anaphase
E) metaphase -> prophase -> anaphase -> telophase
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C) prophase -> metaphase -> telophase -> anaphase
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DNA replication occurs in mitosis.
A) True
B) False
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B) False
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Mitosis and cytoplasmic division result in the formation of two genetically identical cells.
A) True
B) False
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B) False
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Which of the following events do NOT occur in prophase of mitosis?
A) DNA condenses to form chromosomes
B) nuclear membrane breaks down
C) nucleolus breaks down
D) chromosomes are replicated
E) mitotic spindle begins to form
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D) chromosomes are replicated
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The mitotic spindle fibers attach to chromosomes via special structures termed
A) centrioles.
B) asters.
C) kinetochores.
D) centrosomes.
E) keratins.
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C) kinetochores.
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Which of the following statements about microtubules during anaphase is TRUE?
A) those attached to chromosomes elongate, while those that are unattached shorten
B) those attached to chromosomes shorten, while those that are unattached elongate
C) both attached and unattached microtubules shorten
D) both attached and unattached microtubules elongate
E) both attached and unattached microtubules elongate at first and then shorten
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B) those attached to chromosomes shorten, while those that are unattached elongate
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Centromeres divide during metaphase.
A) True
B) False
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A) True
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Cytokinesis in plant cells occurs by means of a cleavage furrow.
A) True
B) False
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A) True
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Centromeres divide in
A) mitosis and meiosis I.
B) mitosis and meiosis II.
C) meiosis II only.
D) meiosis I and meiosis II.
E) mitosis, meiosis I and meiosis II.
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B) mitosis and meiosis II.
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Which of the following describes meiosis II in humans?
A) 4N -> 2N
B) 2N -> 2N
C) 2N -> 1N
D) 1N -> 2N
E) 1N -> 1N
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E) 1N -> 1N
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Arrange the following events in the proper order in which they occur during meiosis I.
1 = Separation of homologous chromosomes
2 = Synapsis
3 = Crossing-over
4 = Independent assortment
A) 1, 2, 3, 4
B) 1, 3, 2, 4
C) 2, 3, 1, 4
D) 2, 3, 4, 1
E) 2, 4, 3, 1
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D) 2, 3, 4, 1
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Germ-line cells are haploid but gametes are diploid.
A) True
B) False
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B) False
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Independent assortment occurs in prophase I.
A) True
B) False
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B) False
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Daughter cells produced in meiosis have
A) one-fourth the number of chromosomes as daughter cells produced in mitosis.
B) half the number of chromosomes as daughter cells produced in mitosis.
C) the same number of chromosomes as daughter cells produced in mitosis.
D) twice the number of chromosomes as daughter cells produced in mitosis.
E) four times the number of chromosomes as daughter cells produced in mitosis.
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B) half the number of chromosomes as daughter cells produced in mitosis.
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The number of cells produced in meiosis is
A) one-fourth the number of cells produced in mitosis.
B) half the number of cells produced in mitosis.
C) equal to the number of cells produced in mitosis.
D) twice the number of cells produced in mitosis.
E) four times the number of cells produced in mitosis.
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D) twice the number of cells produced in mitosis.
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Which of the following is unique to meiosis?
A) nuclear membrane breaks down
B) DNA organizes into chromosomes
C) crossing-over
D) chromosomes align along the central plate of the cell
E) none of the above
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C) crossing-over
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Daughter cells produced in meiosis are identical.
A) True
B) False
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B) False
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Chromosome duplication occurs prior to both mitosis and meiosis.
A) True
B) False
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A) True
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