title: Mechanism of a case of genetic coadaptation in populations of Drosophila melanogaster.
abstract: A cryptic polymorphism found in natrual populations of Drosophila melanogaster has been examined in an artificial population maintained for over 200 generations. The polymorphism is selected because it is insensitive to the segregation distorter phenomenon, and it thereby largely preserves the Mendelian rules of segregation. Segregation distorter chromosomes and the cryptic polymorphism form part of a coadapted complex which is associated with linkage disequilibrium in natrual populations.
mesh_terms: D000818:Animals; D004331:Drosophila melanogaster / Q000502:physiology*; D005260:Female; D005787:Gene Frequency; D005796:Genes; D008040:Genetic Linkage; D006579:Heterozygote; D008297:Male; D011110:Polymorphism, Genetic; D011995:Recombination, Genetic; D012641:Selection, Genetic