Chromosome aneuploidy in the father of a mongol.
D000328:Adult; D002675:Child, Preschool; D003878:Dermatoglyphics; D004314:Down Syndrome / Q000209:etiology; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D008423:Maternal Age; D009030:Mosaicism / Q000150:complications