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Mitosis & Meiosis

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  • Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X chromosomes?
    a sperm cell
    an egg cell
    a female somatic cell
    all the above
  • If the liver cells of an animal have 24 chromosomes, how many chromosomes do its sperm cells have?
    6
    12
    24
    48
  • In which phase of meiosis are tetrads of chromosomes aligned at the center of the cell and independent assortment occurs?
    Metaphase I
    Telophase I
    Metaphase II
    Anaphase I
  • Which of the following is true of the process of meiosis?
    two haploid cells result
    four haploid cells result
    four diploid cells result
    two diploid cells result
  • When comparing prophase I of meiosis with prophase of mitosis, which of the following occurs only in meiosis?
    the chromosomes condense
    the nuclear envelope disappears
    tetrads form
    spindle fibers form
  • Which of the following statements about crossing over is incorrect?
    Leads to an increase in genetic diversity
    Occurs during prophase I of meiosis
    Combines sections of maternal & Paternal chromosomes
    Plays a role in mitosis & meiosis
  • If the cell whose nuclear material is shown below continues toward completion of mitosis, which of the following events would occur next?
    chromosomes would separate
    Chromosomes disappear
    spindle fiber forms
    cell membrane replicates
  • Which of the following occurs is meiosis but not in mitosis?
    chromosome replication
    crossing over
    Production of daughter Cells
    Growth of cells prior to division
  • Which of the following is true of a species that has a chromosome number of 2n=16?
    the species is diploid with 16 chromosomes
    the species is diploid with 32 chromosomes
    none of the above
    a gamete from this species has 4 chromosomes
  • The cell below is in which phase of mitosis?
    Metaphase
    Anaphase
    Prophase
    Telophase
  • A group of cells is tested for DNA content immediately following mitosis and is found to have an average of 10 mg or DNA per nucleus. Those cells would have ___________mg at the end of S phase and ________ mg at the end of G2.
    8,8
    10,20
    20,20
    10,10
  • What is a karyotype?
    a display of every pair of homologous chromosomes within
    a collection of mutations
    a system of classifying cell nuclei
    an animal cell in the process of cytokinesis
  • Imagine looking through a microscope at a squashed onion root tip. In some cells, replicated chromosomes are aligned along the center of the cell. The particular cells are in which stage of mitosis?
    Anaphase
    Telophase
    Metapahse
    Prophase
  • In which phase of meiosis does crossing over occur?
    Prophase II
    Metaphase I
    Anaphase I
    Prophase I
  • Which statement best describes a difference between mitosis and meiosis?
    meiosis repairs an organism while mitosis does not
    Mitosis occurs in eukaryotic cells & meiosis in prokaryotic
    mitosis produces identical cells, but not meiosis
    Meiosis is a multistep process but not mitosis
  • Which of the following happens at the conclusion of meiosis I?
    the chromosome number is conserved
    four daughter cells are formed
    homologous chromosomes are separated
    sister chromatids are separated
  • The correct sequence of steps in the M phase of the cell cycle is
    Prophase, telophase, anaphase, metaphase
    metaphase, anaphase, telophase, prophase
    Prophase, metaphase, anaphase, telophase
    telophase, metaphase, anaphase, prophase
  • The phase in which centrioles move to opposite poles, chromosomes begin to condense, and the nuclear membrane begins to disappear is represented by
    B
    D
    A
    E
  • The phase in which the cell grows and DNA is duplicated is represented by
    E
    D
    B
    A
  • Anaphase is represented by
    A
    C
    B
    D
  • The below cell is in which phase of meiosis?
    Anaphase II
    Anaphase I
    Prophase II
    Prophase I
  • Through a microscope, you can see a cell plate beginning to develop across the middle of the cell and nuclei reforming on either side of the cell plate. The cell is most likely
    An animal cell in the process of cytokinesis
    A plant cell in the process of cytokinesis
    A plant cell in the S phase
    An animal cell in the S phase
  • In animals, somatic cells are produced by mitosis and _______________ are produced by meiosis.
    spores
    Gametes
    clones
    diploid cells
  • The humans X and Y chromosomes are:
    are found in every living individual
    are the same size
    are called sex chromosomes
    all the above
  • The below cell is in which phase of meiosis?
    Prophase II
    Anaphase II
    Anaphase I
    Telophase I
  • The below cell is in which phase of the cell cycle?
    S
    m phase
    G2
    G1
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