title: Hybrid molecules and the superiority of the heterozygote.
mesh_terms: D000483:Alleles; D000818:Animals; D005075:Biological Evolution; D004798:Enzymes; D006579:Heterozygote; D006823:Hybrid Vigor; D006824:Hybridization, Genetic; D010944:Plants; D011110:Polymorphism, Genetic
chemical_list: D004798:Enzymes