- prophase - PROMETAPHASE

- Metaphase- Anaphase - Telophase

Seif El-Badawy 560

Morphological phases

Dividing phase

- Cytokines

phosphorylation of nuclear lamins by M-CDK causes direct access to the genetic material of the cell.

Prometaphase

Nuclear envelope Breaks to vesicles

MetaphaseThe cell prepares chromosomes for division

Chromosomes line up at the center of the cell

Spindle fibres attach to centromeres on the chromosomes

Types of microtubules : 1) Kinetochore

2) interpolar3) astral

AnaphaseThe chromosomes divideSpindle fibers contract

and pull chromosomes apart

½ of each chromosome (called a chromatid) moves to each hemisphere

TelophaseThe cytoplasm divides

Chromosomes arrive at the cell poles

Mitotic spindle disappears

Fragments of nuclear membrane assembles

Decondensing chromosomes

Polar microtubules

Re-forming Nuclear envelope

parent cell splits into two identical daughter cells

CYTOKINESIS :

Contractile ring

Cleavage furrow