Mitosis OCR Alevel
- Created by: aggressive-apple
- Created on: 14-04-15 22:26
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- Mitosis
- 1. pro-phase
- - Chromosomes super coil and are now visible under a light microscope
- Dna becomes inactive as chromosomes condense
- sister chromatides join together by a centermere
- nucleoli shrinks and disappears from sight
- centrioles divide into two and each daughter centriole to the opposite poles of the cell while forming spindle fibres
- - Chromosomes super coil and are now visible under a light microscope
- 2. Metaphase
- Chromosomes move to the equator of the cell
- place of alinement is called the meta-phase plate
- Microtubles attached to the centrioles attach to the centromeres
- Chromosomes move to the equator of the cell
- 3. Ana-phase
- sister chromatids are drawn apart by opposite poles
- separation brought by the shortening of the centrioles and the elongating of the pole to pole microtubles
- once separated they are known as daughter chromosomes
- sister chromatids are drawn apart by opposite poles
- 1. pro-phase
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