title: Twin azygotic test: an application to Italian twin data.
mesh_terms: D000483:Alleles; D005260:Female; D005787:Gene Frequency; D005799:Genes, Dominant; D006801:Humans; D008957:Models, Genetic; D011247:Pregnancy; D011336:Probability; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic