title: Twin zygosity diagnosis by genetic systems--an efficiency evaluation a comment to a paper by Selvin (1977).
mesh_terms: D000483:Alleles; D003937:Diagnosis, Differential; D005260:Female; D005819:Genetic Markers; D006801:Humans; D008297:Male; D011247:Pregnancy; D011336:Probability; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic
chemical_list: D005819:Genetic Markers