1. The cell cycle Cytokinesis: cytoplasm divides Nucleus divides growth
new protein and organelles made
mitosis G1
Proteins needed for cell division made G2 S
DNA replicates
The cell cycle

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3. Cell at interphase Protein synthesis Organelle synthesis
DNA replication
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4. A single chromosome at the beginning of mitosis
Has two chromatids
as the DNA replicates during interphase before mitosis
centromere

5. Early prophase
centrioles
nucleolus
DNA coils and condenses
Chromosomes take up stain

6. prophase
Centrioles move apart
Nuclear membrane breaks down
Nucleolus fades
Chromosomes continue to condense

7. Nucleolus disappears
Chromosomes continue to condense

8. Nuclear membrane broken down
metaphase
Chromosomes aligned on the equator
Nuclear membrane broken down
Each chromosome attached to spindle fibre by the centromere

9. Anaphase
Centromeres divide and chromatids pulled apart

10. Anaphase

11. anaphase

12. Anaphase
Sister chromatids are pulled to opposite poles of the cell

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