A search for assortative mating and segregation abnormalities among mother‐child‐father triplets from paternity cases

摘要

A sample of more than 1000 triplets of mother-child-putative father from paternity cases rigorously tested for several genetic marker systems has been used to search for significant deviations from random mating and from expected segregation ratios. The criteria used to select families where the alleged man is with high probability the true father were found to induce biases in the material. Apart from these biases, there are few deviations from expected frequencies. A positive assortative mating is found for the P blood group system, and in the Gm immunoglobin system a maternal influence on the child's phenotype is indicated.