Details of mitosis
- Created by: 08rmorris
- Created on: 31-03-15 17:30
View mindmap
- Details of Mitosis
- 1. Interphase
- No chromosomes visible
- DNA, histones and centrioles all replicated
- 2. Prophase
- Chromosomes condensed and visible
- Centrioles at opposite poles of cell
- Nucleolus disappears
- 3. Metaphase
- Nuclear envelope disappears
- Chromosomes align along the equator of the cell
- Spindle fibres (microtubules) connect centrioles to chromosomes
- 4. Anaphase
- Centromeres split, allowing chromatids to separate
- Chromatids move towards poles, centormeres first, pulled by proteins "walking" along the microtubule tracks
- 5. Telophase
- Spindle fibres disperse
- Nuclear envelopes form
- Chromatids uncoil and become too thin to see
- 6. Cytokinesis
- In animal cells a ring of actin filament forms round the equator of the cell, and then tightens to form a cleavage furrow, which splits the cell in two
- In plant cells vesicles move to the equator, line up and fuse to form two membranes called the cell plate. A new cell wall is laid down between the membranes, which fuses with the existing cell wall
- 1. Interphase
Similar Biology resources:
Teacher recommended
Comments
No comments have yet been made