Meiosis is the type of cell division which produces gametes for sexual reproduction. The cytoplasm divides ( cytokinesis) and the plasma membrane pinches off to form two new, genetically-identical cells. Telophase & cytokinesis - the two groups of chromsomes decondense (they become long and thin) and a nuclear envelope reforms around them, forming two new nuclei. They attach to the spindle fibre by their centromere.Īnaphase - the centromere splits and the chromatids are pulled to opposite poles of the cell.
Metaphase - the chromosomes line up along the middle of the cell. The centrioles move to opposite poles of the cell and form spindle fibres. Prophase - the chromosomes condense (they become shorter and fatter) and the nuclear envelope disintegrates. The mitochondria produce more ATP which will provide the energy for cell division.
Once the DNA has replicated, each chromosome now consists of two sister chromatids, connected by a structure called the centromere. Interphase - the cell prepares for mitosis by growing larger, replicating its organelles and synthesising new DNA (see above).
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