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Mitosis, light micrograph
Differential interference contrast (DIC) light micrograph of a polar view of cells in the metaphase (left) and telophase (right) stages of mitosis (nuclear division). Mitosis is the formation of two daughter nuclei from one parent nucleus. At metaphase sister chromatids, which are made of DNA (deoxyribonucleic acid, purple), line up along the centre of a cell. The chromatids are then separated to opposite ends of the cell. Two identical chromatids make up one chromosome, so each cell retains a copy of the parent cell's genetic information. Telophase is the last stage of mitosis before cytokinesis (cellular division). Giemsa stain., by DR. JUAN F. GIMENEZ-ABIAN / SCIENCE PHOTO LIBRARY
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