title: Efficiency of genetic systems for diagnosis of twin zygosity.
abstract: A definition of efficiency is presented to aid a researcher in the choice of the genetic systems for the diagnosis of twin zygosity. An expression is given that produces a numeric value that indicates which systems do the most effective job of discriminating DZ twins from a sample of twin pairs. This definition of efficiency is illustrated with eight blood groups commonly used in twin zygosity diagnosis.
mesh_terms: D000483:Alleles; D005260:Female; D005787:Gene Frequency; D006801:Humans; D010641:Phenotype; D011247:Pregnancy; D011336:Probability; D014427:Twins; D014429:Twins, Dizygotic; D014430:Twins, Monozygotic