Owen's model of a genetical system with differential viability between sexes.
D005787:Gene Frequency; D005804:Genes, Lethal; D005838:Genotype; D006720:Homozygote; D006823:Hybrid Vigor; D008433:Mathematics; D008954:Models, Biological; D011110:Polymorphism, Genetic; D012641:Selection, Genetic; D012723:Sex