Genetic drift and polygenic inheritance.
D000483:Alleles; D000704:Analysis of Variance; D001827:Body Height; D003201:Computers; D005787:Gene Frequency; D005796:Genes; D005828:Genetics, Population; D006801:Humans; D008962:Models, Theoretical; D010641:Phenotype; D010858:Pigmentation; D011110:Polymorphism, Genetic; D012641:Selection, Genetic