Download Spindle fibers

4 phases of nuclear division (mitosis),
directed by the cell’s DNA (PMAT)
Prophase
Metaphase—(Middle)
Anaphase—(Apart)
Telophase—(Two)
Draw this!
Prophase
•Chromosomes coil
and become visible
•Centrioles (or poles)
appear and begin to
move to opposite end
of the cell. Spindle
fibers form between
the poles.
•Nuclear membrane
disappears.
Spindle Fibers
Centrioles
Metaphase
•Chromosomes
line up in the
middle of the
cell on the
spindle fibers.
Anaphase
Chromosome
copies divide
Spindle fibers pull
chromosomes to
opposite poles
Telophase
•Chromosomes uncoil
•Nuclear membrane
reforms
•2 new nuclei are
formed
•Spindle fibers
disappear
Stage 3: Cytokinesis
•Cytoplasm and cell organelles divide
evenly
•Two new cells are formed
•No cell wall: cell pinches in two
•Cell wall: cell plate forms to separate the
cells