The Process of Mitosis G.Science 8th FGEIS (C/G)

1. MITOSIS
by
Mr. Muhammad Shokat Zaman
M.Phil (Education)
EST
AT
FG Public Middle School Shorkot Cantt

2. SCHEME OF PRESENTATION
 Definition of mitosis
 Events of mitosis
 Prophase
 Metaphase
 Anaphase
 Telophase
 Cytokinesis

3. Definition of Mitosis
Mitosis takes place in the somatic cells
(body cells) of an organism. Mitosis is
the division of a single nucleus into
two identical daughter nuclei in which
the number of chromosomes remains
same.

4. Events of Mitosis
Biologists have divided
the events of mitosis
into four phases:
prophase, metaphase,
anaphase and
telophase.

5. Prophase

6. Prophase
 The chromosomes shorten, flatten and become
visible under light microscope. Each chromo
some divides into a pair of identical chromatids
joined to one another by the centromere. The
centrioles are two tiny structures located in the
cytoplasm near the nuclear membrane. The
centrioles take up the position on opposite sides
of the nucleus. A spindle fibre begins to
form. The nuclear membrane breaks down.

7. Metaphase

8. Metaphase
 The chromosomes line up on the middle of the
cell. Each chromosome is connected to a different
spindle fibre coming from opposite poles at its
centromere.

9. Anaphase

10. Anaphase
.
)
 The chromatids separate into individual chromosome
due to separation of centromere which is separated due
to the pull created by the spindle fibres coming from
opposite poles and move to the opposite end of the cell

11. Telophase

12. Telophase
The chromosomes gather at opposite end of the
cell. A nuclear membrane forms around each group
of chromosomes.

13. Cytokinesis

14. Cytokinesis
The division of the cell is called cytokinesis. The
cytoplasm pinches in half. Each daughter cell has an
identical set of chromosomes.

15. ALLAH HAFIZ