Brief explanation of Mitosis.

1. Mitosis.
Created by E. Green
09/03/2014

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

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.

9. continue
 Centrioli
move to opposite poles,
with spindle fibers stretching
between them.

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)

14. The Mitosis process:

15. Tips:
 Definition
of mitosis.
 Know where it occurs.
 Know importance of mitosis.
 Name and discuss the different
phases.
 Draw and label each phase.

16. Something interesting!
http://www.youtube.com/watch?v=DD3IQknCEdc

17. Sources:
Images:
 http://obsickboy2.files.wordpress.com/2010/10/mitosis.jpg
 http://www.lentigen.com/images/somatic_overview_graph
ic.jpg
 http://www.lentigen.com/images/somatic_overview_graph
ic.jpg
 http://img.tfd.com/dorland/thumbs/mitosis.jpg
 http://media-cacheec0.pinimg.com/736x/50/f2/a3/50f2a33d2e5648cfb58883d8
5b90173b.jpg
 http://media-cacheak0.pinimg.com/736x/e9/8a/59/e98a5923fb6cd584c37d4b
e42db0ca55.jpg

18. Continue…
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http://www.slideshare.net/mnorthrup2718/mitosis10163181?qid=f0c8e355-a3d4-4847-aad61ba169a63d8c&v=default&b=&from_search=2
http://www.slideshare.net/SSpencer53/mitosis25337539?qid=f0c8e355-a3d4-4847-aad61ba169a63d8c&v=default&b=&from_search=7
http://www.slideshare.net/farrellw/mitosispowerpoint-11216292
http://www.slideshare.net/kpytel/mitosis-notes-5227298621
Williamson,J.,(2013). Class notes.