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23 Cards in this Set

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anaphase
a phase of mitosis and meiosis in which the chromosomes separate
cell cycle
the events of cell division – includes interphase – mitosis and cytokinesis
Cell Plate
a membrane that divides newly forming plant cells following mitosis.
Centriole
a structure that appears during mitosis in animal cells
Centrosome
a dark body containing a centriole in animal cells but not in plant cells – spindle fibers radiate from the centrosomes in preparation for mitosis
Cleavage furrow
the area of the cell membrane that pinches in and eventually separates the dividing cell.
Cytokinsis
the division of the cytoplasm of the cell into two new cells
G0
a phase of the cell cycle in which the cell is not dividing and its DNA is not replicating.
G1
the first period of interphase- in which the cell doubles in size.
G2
the final period of interphase- in which the cell undergoes rapid growth and prepares for mitosis
Interphase
a period of cell growth and development that precedes eukaryotic cell nuclear division
Kinetochore
a disk- shaped protein found in the centrosome region of a chromosome that attaches the chromosomes to the mitotic spindle
Kinetochore fiber
a spindle fiber that extends from the centrosome at one pole of the cell to a chromatid during mitosis
Meiosis
the process of nuclear division that reduces the number of chromosomes in a cell by half
Metaphase
the second phase of mitosis-during which all the chromosomes move to the cell’s equator
Mitosis
eukaryotic nuclear division
Mitotic spindle
the array of spindle fibers that serve to divide the chromatids during nuclear division
M phase
mitosis; the phase of cell division in which the nucleus divides
Polar fiber
fibers that extend across a dividing cell form centrosome to centrosome
S phase
the second period of interphase during which replication of DNA occurs
Spindle fiber
one of the microtubules that extend across a dividing euykaryotic cell; assists in the movement of chromosomes
Telophase
the final stage of miosis during which a nuclear membrane forms around each set of new chromosomes
Prophase
the first stage of mitosis and meiosis- characterized by condensation of chromosomes