Topics
• Interphase
• Mitosis
• Cytokinesis
Interphase
• Cells are in interphase about 90% of the
time.
Interphase
• During this phase chromosomes replicate.
Mitosis
• Prophase
• Metaphase
• Anaphase
• Telophase
Prophase
• The nuclear membrane breaks down
Prophase
• Nucleoli gradually disappear
Prophase
• Chromosomes become visible as the
chromatin condenses
Prophase
• Each chromosome appears as two sister
chromatids, linked together, at the
centromere.
Metaphase
• The chromosomes arrange themselves at
the center of the cell (on the equatorial
plane).
Anaphase
• Sister chromatids separate and are pulled
to opposite ends or poles of the cell.
Anaphase
• The chromosomes appear V shaped.
Telophase
• The nuclear membrane begins to reform.
Telophase
• Nucleoli begin to reappear.
Telophase
• A furrow appears that contricts the
cytoplasmic mass.
Cytokinesis
• The cell divides in half.
• Result: Two identical daughter cells.