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Mitosis & Meiosis

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