Mitosis Flashcards
the phase in which the cell grows & carries out its usual activities
interphase
cell division phase
mitotic phase
DNA is copied during
interphase
mitotic phase consists of 2 events:
mitosis and cytokinesis
division of the cytoplasm
cytokinesis
the two daughter nuclei are genetically
identical
4 phases of mitosis
prophase, metaphase, anaphase, telophase
cytokinesis begins when
late anaphase
3 types of cells that almost completely lose the ability to divide
neurons, skeletal muscle cells, cardiac muscle cells
during interphase, DNA is in the form of
chromatin
chromosomes are formed from the chromatin during
prophase
sister chromatids are held together at the
centromere
nucleoli disappear and centrisomes separate during
prophase
centrisomes create a microtubule assemby called _______ during ________
the mitotic spindle; prophase
microtubule arrays extending from the centrosome matrix
asters
nuclear envelope breaks up during
prophase
proteins that form at the centromere during prophase
kinteochores
tubules extending from the kinetochores
kinetochore microtubules
tubules not attached to any chromosome
nonkinetochore microtubules
each end of the cell where the centrosomes begin the spindle
spindle pole
the kinetochore microtubules start to pull on the chromosome from both poles during
prophase
chromosomes cluster at the cell’s equator during
metaphase
the imaginary plane midway between the poles
metaphase plate
enzymes act to separate chromatids from each other during
metaphase
shortest phase of mitosis
anaphase
centromeres of the chromosomes split during
anaphase
kinetochore microtubules pull each chromosome toward each pole during
anaphase
microtubules slide past each other, lengthen, and push two poles apart during
anaphase
________ begins as soon as chromosomal movement stops
telophase
chromosomes unfoil & resume chromatin form during
telophase
a new nuclear envelope forms during
telophase
the spindle breaks down and disappears during
telophase
during cytokinesis, a ________ _____ forms the cleavage _______.
contractile ring; furrow