Founder EffectGypsiesSouth DakotaGenetics, PopulationPedigreeHaplotypesGenetic VariationLinkage DisequilibriumMicrosatellite RepeatsGene FrequencyChromosome MappingAllelesGenetic Predisposition to DiseaseGenome-Wide Association StudyGenotypePolymorphism, Single NucleotideGenetic LinkageItalyGenetic MarkersGenome, HumanModels, GeneticHeterozygoteFinlandMutationPhenotypeEuropean Continental Ancestry GroupJewsMolecular Sequence DataAfrica, NorthernDNA Mutational AnalysisIndians, South American