1. Mitosis
A Type of Cell Division

2. Mitosis
One human cell eventually multiplies to several hundred trillion producing a human being. This process is called MITOSIS.
It is the event that ensures that every cell in your body has the identical set of genetic instructions or DNA.

3. Cells become ready for mitosis by making copies of their DNA, this process is called replication.
Each double stranded chromosome contains two chromatids, joined by a centromere.

5. The Phases of Mitosis
The phases of mitosis include, prophase, metaphase, anaphase and telophase.
Cells spend most of their time in interphase.

7. Importance of Mitosis:
Growth
Repair
Replacing dead and damaged cells
Asexual reproduction
To ensure that each daughter cell maintains exactly the same number and kind of chromosomes as the parent cell.
Produces two identical daughter cells

8. Interphase (Resting stage)
Chromosomes cannot be seen
Chromosomes duplicate and double in number

9. Interphase
Animal cell
Plant cell

10. nuclear membrane disappearing
Prophase
nuclear membrane disappearing
chromatids
centromere
Chromosomes become visible
Each chromosome consists of two identical chromatids
homologous chromosomes

11. Prophase
Animal cell
Plant cell

12. Metaphase Chromosomes line up at the equator (centre of the cell)
Spindles are formed to attach to the centromere of each chromosome

13. Metaphase
Animal cell
Plant cell

14. Sister chromatids separate as individual chromosomes
Anaphase
chromosomes
Sister chromatids separate as individual chromosomes
They move apart towards the opposite poles

15. Anaphase
Animal cell
Plant cell

16. nuclear membrane forming
Telophase
nuclear membrane forming
Chromosomes gradually disappear
Nuclear membrane is forming around each set of chromosomes

17. Telophase
Animal cell
Plant cell

18. Cytoplasmic division Division of cytoplasm cleavage furrow cell plate
Animal cells : by formation of cleavage furrow
Plant cells : by formation of cell plate

19. Can you identify the different stages of mitosis from the diagram below?
anaphase
interphase
telophase
metaphase
prophase

20. Animation