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Mitosis & Meiosis

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