2. Mitosis is also called Cell
Division, why?
During
mitosis, the nucleus of
the cell divides, forming two
nuclei with identical genetic
information.
3. Why is Mitosis important?
Allow
an organism to grow.
Repairs
damaged cells/tissue.
Replace
dead cells/tissue.
Reproduction
organisms.
in some simple
4.
5. Where does Mitosis take
place?
In
all somatic cells (include all body
cells and excludes the sex cells –
sperm/egg cells)
6. The process of Mitosis consists
of a few phases:
INTERPHASE
PROPHASE
METAPHASE
ANAPHASE
TELOPHASE
7. Interphase:
Cell
builds up enough energy for division
process.
DNA replication occurs
Cell look normal, like before division
8. Prophase:
Nuclear
envelope and nucleolus
disappear.
Chromatin
become more tightly
coiled, and condenses into
individual chromosomes.
Chromosomes arrange randomly in
the cell.
10. Metaphase:
The
centrioli reached the opposite poles
with the spindle fibers in between.
The chromosomes arrange randomly on
the equator, each single chromosome
attaching to a separate spindle fiber by
means of the centromere.
11. Anaphase:
The
spindle fibers pull tight.
The centromeres attaching the
chromatids of the chromosomes split in
half.
Daughter chromosomes move to
opposite poles.
12. Telophase:
Daughter
chromosomes reach poles.
Nuclear envelope surrounds
chromosomes.
Nucleolus reappear at each pole.
Chromosomes become less condense
forming chromatin.
Two identical nuclei has been formed.
13. Continue…
Invagination
of the cytoplasm and
plasma membrane occurs. (Cleavage
furrow forms in animal cells and a
cytoplasmic plate forms in plant cells)
Continues until the cell in divided into 2
separate cells. (Identical to one another
and to the original cell)
15. Tips:
Definition
of mitosis.
Know where it occurs.
Know importance of mitosis.
Name and discuss the different
phases.
Draw and label each phase.