Etiology of nondisjunction: lack of evidence for genetic control.
D000293:Adolescent; D000328:Adult; D001773:Blood Cells; D002648:Child; D002675:Child, Preschool; D046508:Culture Techniques; D004314:Down Syndrome / Q000235:genetics*; D005260:Female; D006801:Humans; D007178:Inbreeding; D007223:Infant; D007621:Karyotyping; D008297:Male; D008423:Maternal Age; D008540:Meiosis; D008875:Middle Aged