title: Genetic contributions to morphological and behavioral similarities among sibs and dizygotic twins: linkages and allelic differences.
mesh_terms: D000483:Alleles; D001519:Behavior; D001789:Blood Group Antigens; D005260:Female; D005787:Gene Frequency; D008040:Genetic Linkage; D006801:Humans; D011247:Pregnancy; D014427:Twins
chemical_list: D001789:Blood Group Antigens