• chromosomal disorder

    TITLE: chromosomal disorder
    TITLE: human genetic disease: Numerical abnormalities
    SECTION: Numerical abnormalities
    ...majority of conceptions involving trisomy for any of these three autosomes are nonetheless lost to miscarriage, as are all conceptions involving trisomy for any of the other autosomes. Similarly, monosomy for any of the autosomes is lethal in utero and therefore is not seen in the population. Because numerical chromosomal abnormalities generally result from independent meiotic events, parents...