miosis -
(genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
anaphase the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
cytokinesis organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
karyokinesis organic process consisting of the division of the nucleus of a cell during mitosis or meiosis
nondisjunction meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells