Download HO-Mitosis

Mitosis & Cell Division
Mitosis - The division of the nucleus that results in identical complete
copies of chromosomes packaged into two new nuclei
Cytokinesis - The division of the cytoplasm that results in two daughter
cells
Why do Cells Divide?



Growth
Reproduction (in single celled organisms)
Repair
Some Cells never divide, others divide frequently.
The Cell Cycle
Mitosis
Interphase
(technically not part
of mitosis, but it is
included in the cell
cycle)
Cell is in a resting
phase, performing
cell functions
DNA
replicates
(copies)
Organelles
double in
number, to
prepare for
division
Ssynthesis
(copy
DNA)
G2 Second
growth
Prophase
Prometaphase
Spindle forms
Microtubules of spindle attach to
kinetochore on chromosomes
Centrioles move to opposite poles
Chromosomes become visible
Nuclear membrane breaks down in
prometaphase
G1 - First
growth
Metaphase
Anaphase
Telophase
Chromosomes line up along the equator
Centromeres divide
Nuclear membrane forms around
each group of chromosomes
Chromatids separate and move to opposite
poles
Chromosomes unwind
Cytokinesis begins - cell pinches
inward and forms two daughter cells.
Mitosis produces 2 daughter cells. These two daughter cells contain the exact
same number of chromosomes as the original parent cell. Daughter cells are
DIPLOID