Meiosis
- Created by: sarahbrennan98
- Created on: 30-05-15 17:40
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- Meiosis 1
- Interphase
- Genetic material duplicates
- Prophase 1
- Synapsis causes a chromosome from each parent cell (homologous chromosome) to join together and transfer its genetic code, known as 'crossing over'.
- Causes variation!
- Metaphase 1
- The homologous chromosomes line up at the metaphase plate
- Spindles attach to each homologous pair from either pole of the cells
- Independant orientation causes variation also, because the way in which the chromosomes line up on the equator has nemurous posibilitys
- Anaphase 1
- the spindles pull the homologous pairs apart to opposite poles of the cell
- Telophase 1
- Nuclei form around the chromosomes at each pole of the cell and the cell physically divides via cytokinesis
- Prophase 2
- No more crossing over occurs and no more homologous pairs can be formed
- Metaphase 2
- all the chromosomes in each cell lines up on the metaphase plate again, with spindles attached to their centromeres
- Anaphase 2
- Each chromosome is pulled apart to opposite poles of the cell
- Telophase 2
- Nuclei form around the chromosomes again, and cytokineses divides each cell in 2, this ultimately forms 4 daughter cells
- The homologous chromosomes line up at the metaphase plate
- Synapsis causes a chromosome from each parent cell (homologous chromosome) to join together and transfer its genetic code, known as 'crossing over'.
- Interphase
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