Analysis of VarianceMultivariate AnalysisModels, GeneticGenetic VariationBreedingQuantitative Trait, HeritableModels, StatisticalReproducibility of ResultsRegression AnalysisQuantitative Trait LociPhenotypeEnvironmentLinear ModelsTwins, DizygoticComputer SimulationTwins, MonozygoticLikelihood FunctionsAlgorithmsData Interpretation, StatisticalGenotypeSelection, GeneticGenetics, PopulationFactor Analysis, StatisticalInheritance PatternsInbreedingTime FactorsQuestionnairesPrincipal Component AnalysisBayes TheoremMonte Carlo MethodStatistics as TopicCrosses, GeneticModels, BiologicalGenetic MarkersTwinsBody WeightEpistasis, GeneticGenetic LinkageAllelesSample SizeChromosome MappingPsychometricsSex FactorsCross-Sectional StudiesDiseases in Twins