Transcript Mitosis

Mitosis
The Cell CYCLE consists of
Interphase and MITOSIS
(division of the nucleus). Most
of the time the cell is in
INTERPHASE as the cell
prepares for division.
C
G2 M
S
G1
INTERPHASE
1.The cell’s chemical
machine operates and the cell
grows (G1 phase).
2.The SYNTHESIS of DNA (S
phase).
3.PREPARE for cell division
MITOSIS
1. The chromatin CONDENSES (shortens) into
chromosomes.
Chromatin
vs.
Chromosomes
•Long/thin
•Short/thick
•Invisible
•Visible
•Active
•Inactive
•Working cell
•Dividing cell
2.The nuclear membrane and
nucleolus DISAPPEAR.
3.Centrioles move apart to opposite
ends of the cell.
4.SPINDLE fibers from the centrioles
attach to centromeres.
Chromosomes
Metaphase
1. Chromosomes
line up on the
EQUATOR of the
cell.
Anaphase
1.Centromere SPLITS.
2.Chromosomes are
PULLED to the ends of
the cell.
Telophase
1. Chromosomes ARE AT the ends of the cell.
2. Chromosomes DECONDENSE (lengthen) to
form chromatin.
3. The nuclear membrane and nucleolus
REAPPEAR.
4. The centrioles SEPARATE.
5. The CYTOPLASM is divided.
(Cytokinesis)