title: Directional-disruptive selection in Drosophila melanogaster.
abstract: Artificial directional selection for increased sternopleural chaetae number in Drosophila melanogaster is compared with a mode of directional selection which incorporates an element of disruptive selection. Compared with directional selection, this directional-disruptive selection results in a similar response but with a lower selection differential, and higher realised heritability. The differences might be attributed to a higher genetic variance maintained by the directional-disruptive selection.
mesh_terms: D000818:Animals; D003433:Crosses, Genetic; D004331:Drosophila melanogaster / Q000235:genetics*; D005260:Female; D014644:Genetic Variation; D008297:Male; D010641:Phenotype; D011995:Recombination, Genetic; D012641:Selection, Genetic; D013997:Time Factors