Term: 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
Broader: meiosis: (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) | Unrelated: early-morning hour: an hour early in the morning
Broader: meiosis: (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) | Unrelated: callosity: an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot)