mitosis is an equational division in which one parent cell will divide into two identical daughter cells. Those daughter will be the exact copy of parent cell. As this division is not only important only after birth but also important from the time of zygote formation to the development of whole life inside womb.

1. MITOSIS
BHAGYASHREE BHANDEKAR

2. STAGES IN CELL CYCLE AND CELL DIVISION
CELL CYCLE AND CELL DIVISION
TIME DURATION

3. DNA, CHROMATIN, CHROMOSOME

4. HOW ALL THESE HAPPEN?

5. EQUATIONAL DIVISION
MITOSIS

6. WHAT DOES THIS MEAN ?
ORIGIN
GREEK- MITOS (THREAD)
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MODERN LATIN- MITOSIS
Late 19th century: modern Latin, from Greek mitos ‘thread’.

7. WHO COINED THIS WORD?
Straasburger observed first in plant cell (1870).
Boveri and Flemming observed first in animal cell.
Term mitosis given by_ Flemming in 1882.

8. STAGES IN MITOSIS
PROPHASE
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METAPHASE
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ANAPHASE
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TELOPHASE
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CYTOKINESIS

9. PROPHASE
 Chromosomes condenses in X-shaped
structures.
 At the end of prophase, nuclear membrane
becomes less prominent, releasing the
chromosomes.
 The mitotic spindles, consisting of the
microtubules and other proteins, extends
across the cell between the centrioles, as
they move to opposite poles of the cells.

10. METAPHASE
 Chromosomes line up in the middle of the cell.
 Nucleus becomes less prominent.

11. ANAPHASE
 Spindle fibers pull chromosomes to opposite
poles of the poles.

12. TELOPHASE
 Chromosomes are completely at opposite poles.
 New nuclei begin to form on the two sides to make
them two new cells.

13. CYTOKINESIS
The cytoplasmic division of a cell at
the end of mitosis, bringing about the
separation into two daughter cells.

14. DEFINITION
A type of cell division that results in two daughter cells, each having
the same number of chromosomes as the parent nucleus. Thus
mitosis is also called equational division.

15. SIGNIFICANCE OF MITOSIS
Important in growth of tissues and hence, of an organisms.
Maintains the same number of chromosomes as that of the parents.
Helps in repair of worn out cells.
Significant in cancer research.