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Transcript
Stages of Mitosis Interphase u When the cell is not dividing u Cell grows to about twice its size u Produces various organelles u Preparation for division u DNA is duplicated Prophase u Chromosomes in the nucleus condense u Each chromosome consists of two chromatids held together by a centromere u Nuclear membrane break down Metaphase u Chromosomes line up in the middle of the cell u Centromeres of the chromosome are the same distance from each side of the cell u Microtubules attach to centromeres uCentrosomes control microtubules Anaphase u Chromatids separate u Chromatids pulled to opposite sides of the cell u Each side of the cell ends up with a complete set of chromosomes Telophase uA new nuclear membrane forms around each group of chromosomes u The new cell has two identical nuclei u Chromosomes become less condensed u Cytokinesis begins Cytokinesis u Division of the parent cell’s cytoplasm u Cell membrane pinches inward between the new nuclei u Forms two complete cells