AllelesGenes, LethalEthyl MethanesulfonateGenes, RecessiveGenetic Complementation TestDrosophila melanogasterPhenotypeMutationCrosses, GeneticChromosome MappingHomozygoteGenes, InsectDrosophila ProteinsDrosophilaMolecular Sequence DataBase SequenceAmino Acid SequenceGenotypeGene FrequencyPolymorphism, GeneticPolymorphism, Single NucleotideGenetic Predisposition to DiseaseHaplotypesGenetic VariationHeterozygotePolymerase Chain ReactionLinkage DisequilibriumMicrosatellite RepeatsGenetic MarkersCase-Control StudiesHLA-DRB1 ChainsPolymorphism, Restriction Fragment LengthModels, GeneticGenetics, PopulationSequence Analysis, DNAPedigreeGenetic LinkageGenetic Association StudiesAsian Continental Ancestry GroupExonsDNA Mutational AnalysisDNA PrimersHLA-DQ AntigensHLA-DR AntigensSelection, GeneticGenetic LociGenes, DominantEuropean Continental Ancestry GroupHLA-B AntigensApolipoprotein E4Suppression, GeneticPoint MutationDNARecombination, GeneticMinisatellite RepeatsHeterozygote DetectionGene DeletionMutation, MissensePromoter Regions, Genetic