RT Journal Article SR Electronic T1 Diplospermy II indicated as the origin of a liveborn human triploid (69,XXX). JF Journal of Medical Genetics JO J Med Genet FD BMJ Publishing Group Ltd SP 386 OP 389 DO 10.1136/jmg.18.5.386 VO 18 IS 5 A1 Page, B M A1 Robson, E B A1 Cook, P J A1 Sanger, R A1 Watt, J L YR 1981 UL http://jmg.bmj.com/content/18/5/386.abstract AB A 69,XXX liveborn baby was shown to have the Rh genotype CDe/cDE/cde which suggested that 46 of her chromosomes were of paternal origin. Studies on C band polymorphisms and other genetic markers indicated that the most likely origin of this triploid was a failure of male meiosis II.