summer work mitosis

prophase

• chromosome condense: visible when stained

• centrosomes start releasing splindle fiber

• nuclear envellope breaks down

• nucleonus breaks down

metaphase

• centrosomes go to poles of cells

• spindle fibers align the chromosomes at the equator of the centrosomes

• each sister chromatid has one spindle fiber

anaphase

• chromosomes split in two equal sister chromatids at centromeres

• pulled by spindles to the poles of the cell

telophase

• chromosomes start condensing again

• spindle fibers break down

• nucleonus reforms

• nuclear enveloppes starts to reform

• cytokinesis occurs ( division of the cell and cytoplasm in two by constriction from edges of cell

interphase

• chromosomes start to decondense and sister chromatids duplicate again