Differential interference contrast (DIC) light micrograph of a cell in the telophase stage of mitosis (nuclear division). Mitosis is the formation of two daughter nuclei from one parent nucleus. During mitosis, sister chromatids, which are made of DNA (deoxyribonucleic acid, purple), are moved to separate poles 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.