Mitosis is the process of cell division that results in two daughter cells with identical copies of DNA as the parent cell. It has four main phases: prophase, metaphase, anaphase and telophase. During prophase the chromosomes condense and the mitotic spindle forms. In metaphase the chromosomes align in the center of the cell. Anaphase involves the separation of sister chromatids to opposite poles. Telophase concludes with the formation of two daughter cell membranes pinching the cell in two.

1. Asexual Reproduction
Mitosis
Mitosis is the process in which
the nucleus divides to form two
new nuclei. How does mitosis
differ in plants and animals?
1 1

2. How do little elephants grow up to be BIG
elephants?

4. The process of asexual
reproduction begins after a
sperm fertilizes an egg.

5. Skin cancer - the abnormal growth of
skin cells - most often develops on skin
exposed to the sun.
Cell that reproduce by asexual
reproduction reproduce constantly.

6. Animated Mitosis Cycle
http://www.cellsalive.com/mitosis.htm
• Interphase
• Prophase
• Metaphase
• Anaphase
• Telophase & Cytokinesis

8. • Chromosomes are copied (# doubles)
• Chromosomes appear as threadlike coils
(chromatin) at the start, but each chromosome
and its copy(sister chromosome) change to sister
chromatids at end of this phase
CELL
Nucleus MEMBRANE
Cytoplasm

9. Unreplicated vs. replicated chromosome
During which part of the Cell
Cycle does replication of DNA
occur . . . Interphase, or Cell
Division (Mitosis or Meiosis)?

10. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

11. • Mitosis begins (cell begins to divide)
• Centrioles (or poles) appear and begin to
move to opposite end of the cell.
• Spindle fibers form between the poles.
Centrioles
Sister chromatids
Spindle fibers

12. Animal Cell Plant Cell
Spindle fibers
Centrioles
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

13. • Chromatids (or pairs of chromosomes) attach
to the spindle fibers.
Centrioles
Spindle fibers

14. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

15. • Chromatids (or pairs of chromosomes)
separate and begin to move to opposite ends
of the cell.
Centrioles
Spindle fibers

16. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

17. • Two new nuclei form.
• Chromosomes appear as chromatin (threads
rather than rods).
• Mitosis ends.
Nuclei Nuclei
Chromatin

18. Animal Cell Plant Cell
Photographs from: http://www.bioweb.uncc.edu/biol1110/Stages.htm

19. • Cell membrane moves inward to create two
identical daughter cells – each with its own
nucleus with identical chromosomes.
• Daughter cells are IDENTICAL to the original
parent cell.

20. Animal Mitosis -- Review
Interphase Prophase
Metaphase Anaphase
Telophase Interphase

21. Plant Mitosis -- Review
Interphase Prophase
Metaphase Anaphase
Telophase Interphase

22. 23

23. http://www.cellsalive.com/mitosis.htm