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Stages of Mitosis
Kimberly J. Luper B.S. M.S.
Objectives
 Distinguish the difference between mitosis and
meiosis.
 List the functions of mitosis
 Define the mitotic ...
Mitosis v/s Meiosis
• Mitosis is the duplication of the
chromosomes in the nucleus and their
separation into two identical...
Functions of Mitosis
 Growth of all tissues and organs after birth.
 Replacement of cells that die.
 Repair of damaged ...
Mitotic Phase
The mitotic phase of
the cell cycle consists
of:
 Nuclear division
(mitosis)
 Cytoplasmic
division
(cytoki...
Four Stages of Mitosis
Prophase
Prophase is actually divided into two steps:
1. Early prophase
2. Late prophase
Early Prophase
Centrioles
(two pairs) “Aster rays”
Nuclear envelope containing
chromosomes.
Late Prophases
Chromosome with
two sisters chromatids
Centromere
Centrioles
Spindle fibers /microtubules
Metaphase
Metaphase plate
Chromosome
microtubules
Anaphase
Daughter chromosomes
Telophase
Cleavage furrow
Nuclear membranes
Daughter cells
Cytokinesis
 Cytoplasmic division: contractile ring from
cleavage furrow around the center of the cell,
dividing cytoplas...
WHY?
Why is the mitotic phase or mitosis phase so
important?
WHY?
Cell division or mitosis helps the body to replace
dead cells and repair damaged tissue.
(Paper cuts to major surgery)
Check In
PMAT
PMAT
1. Pro(before) phase: Chromatin fibers
condense into paired chromatids; nucleus
envelope disappears; each centrosome
...
PMAT
3. Ana(apart) phase: Centromeres split;
identical sets of chromosomes move to
opposite poles of the cell.
4. Telo(end...
References
Tortora, G.J. & Derrickson, B. (2012). Principles
of Anatomy and Physiology (13th ed.). Hoboken,
NJ: John Wiley...
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Stages of mitosis final project itp

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Stages of mitosis final project itp

  1. 1. Stages of Mitosis Kimberly J. Luper B.S. M.S.
  2. 2. Objectives  Distinguish the difference between mitosis and meiosis.  List the functions of mitosis  Define the mitotic phase.  Discuss and explain the four stages of mitosis.  Define cytokinesis.
  3. 3. Mitosis v/s Meiosis • Mitosis is the duplication of the chromosomes in the nucleus and their separation into two identical sets in the process of somatic (“of the body”) cell division. • Meiosis is restricted to one purpose, the production of eggs and sperm.
  4. 4. Functions of Mitosis  Growth of all tissues and organs after birth.  Replacement of cells that die.  Repair of damaged tissues.
  5. 5. Mitotic Phase The mitotic phase of the cell cycle consists of:  Nuclear division (mitosis)  Cytoplasmic division (cytokinesis) to form two identical cells.
  6. 6. Four Stages of Mitosis
  7. 7. Prophase Prophase is actually divided into two steps: 1. Early prophase 2. Late prophase
  8. 8. Early Prophase Centrioles (two pairs) “Aster rays” Nuclear envelope containing chromosomes.
  9. 9. Late Prophases Chromosome with two sisters chromatids Centromere Centrioles Spindle fibers /microtubules
  10. 10. Metaphase Metaphase plate Chromosome microtubules
  11. 11. Anaphase Daughter chromosomes
  12. 12. Telophase Cleavage furrow Nuclear membranes
  13. 13. Daughter cells
  14. 14. Cytokinesis  Cytoplasmic division: contractile ring from cleavage furrow around the center of the cell, dividing cytoplasm into separate and equal portions.
  15. 15. WHY? Why is the mitotic phase or mitosis phase so important?
  16. 16. WHY? Cell division or mitosis helps the body to replace dead cells and repair damaged tissue. (Paper cuts to major surgery)
  17. 17. Check In PMAT
  18. 18. PMAT 1. Pro(before) phase: Chromatin fibers condense into paired chromatids; nucleus envelope disappears; each centrosome moves to an opposite pole of the cell. 2. Meta( after) phase: Centromeres of chromatid pairs line up at metaphase plate.
  19. 19. PMAT 3. Ana(apart) phase: Centromeres split; identical sets of chromosomes move to opposite poles of the cell. 4. Telo(end) phase: Nuclear envelopes and nucleoli reappear; chromosomes resume chromatin form; mitotic spindles disappear.
  20. 20. References Tortora, G.J. & Derrickson, B. (2012). Principles of Anatomy and Physiology (13th ed.). Hoboken, NJ: John Wiley & Sons. Martini, F.H., Nath, J.L. (2012) Fundamentals of Anatomy & Physiology (9th ed.). San Francisco, C.A. Pearson Education, Inc.

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