Is there a predisposition for meiotic non‐disjunciton that may be detected by mitoitc hyperploidy?

Abstract
The aneuploidy frequencies have been stuided in vitro in lymphocytes from couples with recurent abortions, from parents of a trisomic child and from control couples with at least two normal children; c‐heterochromatin variants have been analysed on the same samples by length measurements.A significant increase of hyeperploid cells has been observed in the lymphocytes from parents of a trisomic and couples with recurrent abortions as well. However, no consistent correlation has been found so far between c‐heterochromatin varients and an increase of aneuploidy.