Meiosis 3.0 / 5 based on 1 rating ? BiologyCellular processes and structureA2/A-levelOCR Created by: KirstyCreated on: 10-06-13 22:02 Chromosomes supercoil and come together in homologus pairs to form a bivalent, chromatids wrap around each other at chiasmata. Prophase 1 1 of 8 Centromeres attach to spindle fibres and bivalents arrange themselves along the equator Metaphase 1 2 of 8 Each one of the homologus pairs is pulled apart by the spindle to opposite poles Anaphase 1 3 of 8 The nuclear envelope reforms around the chromosomes at each pole Telophase 1 4 of 8 The nuclear envelope breaks down again, chromosomes supercoil and spindle fibres form Prophase 2 5 of 8 Chromosomes arrange themselves on the equator of each cell and are attached to the spindle by their centromere. Metaphase 2 6 of 8 The centromeres divide and chromatids are pulled to opposite poles by the spindle fibres and randomly segregate. Anaphase 2 7 of 8 A tetrad of four haploid cells is formed as cells divide by cytokinesis and nuclear envelope reforms Telophase 2 8 of 8
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