[Calculation of the plausibility of paternity with blood group results using gene frequencies of foreign populations. I. Formulas for the manual computation of Y/X values (author's transl)]. / Berechnung der Vaterschaftswahrscheinlichkeit mit Blutgruppenbefunden unter Benutzung von Frequenzen Fremdstämmiger I. Mitteilung: Formeln zur Handrechnung von Y/X-Werten in Systemen mit 2, 3 und 4 Allelen

Formulas for the computation of the Y/X likelihood ratio will be given when in view of a biostatistical evaluation of blood group findings frequencies other than Central European ones should be used for all participants concerned. The given formulas are applicable to all common blood group systems and factors currently used in blood group expertises, except the Rh and HL-A systems which are too complex for simple arithmetic formulas.

Variability of plantar zygodactylous triradii in monozygotic and dizygotic twins.

Using a special method, the dermatoglyphics of the plantar interdigital areas of 86 monozygotic and 76 dizygotic Polish twin pairs were obtained. The frequencies of different types of zygodactylous triradii were estimated using a recently published new scheme of classification. The second, third, and fourth interdigital areas were grouped together. The findings indicate a high heritability which suggest that zygodactylous triradii might be used as a valuable genetic marker.