6533b856fe1ef96bd12b3165
RESEARCH PRODUCT
Overcompensation as a mechanism for maintaining polymorphism: egg-to-adult viability in Drosophila.
Andrés MoyaFrancisco J. AyalaM. Miloševićsubject
0106 biological sciencesGenetic MarkersHeterozygoteFrequency-dependent selectionPopulationPopulation geneticsPlant ScienceBiology010603 evolutionary biology01 natural sciencesPopulation densityIntraspecific competitionLoss of heterozygosity03 medical and health sciencesGeneticsAnimalsSelection GeneticeducationSelection (genetic algorithm)030304 developmental biologyOvumGenetics0303 health scienceseducation.field_of_studyNatural selectionPolymorphism GeneticSuperoxide DismutaseGeneral MedicineDrosophila melanogasterEvolutionary biologyInsect ScienceAnimal Science and ZoologyFemaledescription
Frequency-dependent selection may be accounted for, in ecological terms, by the differential effectiveness of alternative genotypes in exploiting limiting environmental resources. Differentiation in resource exploitation among genotypes implies in turn that a mix of genotypes may exploit more fully the resources than a genetically uniform population, a phenomenon called 'overcompensation' Experiments designed to test for overcompensation whow that highly polymorphic populations can support larger numbers of individuals per food unit than less polymorphic populations. This difference cannot be attributed to the level of individual heterozygosity, which is the same in both types of populations. © 1990 Kluwer Academic Publishers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-11-01 | Genetica |