click below
click below
Normal Size Small Size show me how
Meiosis
Stages of Meiosis
| Description | Stage |
|---|---|
| Chromosomes are long, thin and stainable | Prophase 1 |
| Bivalent units form | Prophase 1 |
| Chromosomes become short and fat and replicate | Prophase 1 |
| Chiasmata form | Prophase 1 |
| Genetic material exchanged between homologous chromosomes | Prophase 1 |
| Neucleur membranes break down | Metaphase 1 |
| Spindles form | Metaphase 1 |
| Chromosomes attached to centre from centrometers | Metaphase 1 |
| Spindles contract | Anaphase 1 |
| Chromosomes pulled to poles | Anaphase 1 |
| Genetic exchange complete | Anaphase 1 |
| Neucleur membranes form 2 daughter neuclei | Telophase 1 |
| Chromosomes become long and thin | Telophase 1 |
| Neculei reappear | Interphase |
| Chromosomes again long and thin | Prophase 2 |
| Neuclear membranes again break down | Metaphase 2 |
| Chromosomes attached to centre by centrometers again | Metaphase 2 |
| Chromosomes complete replication at centrometers | Anaphase 2 |
| Chromotids pulled to opposite poles | Anaphase 2 |
| Neucler membranes reform to 4 cells | Telophase 2 |