[The relation between genotypical and phenotypical plausibilities of paternity (author's transl)].

Applying the formula of Okajima [2,3] to the genotypical possibilities of a given phenotypical child-mother-putativ father constellation one can compute for each of these possibilities a genotypical probability of paternity. It is possible to determine the discrete distribution function, the mean value, and the variance of these genotypical probabilities of paternity and it is shown that the phenotypical probability of paternity is equal to the mean value of the genotypical probabilities of paternity.