Heterozygote advantage for the phenylketonuria allele.
D001724:Birth Weight; D003718:Denmark; D005808:Genes, Recessive; D005865:Gestational Age; D006801:Humans; D007751:Labor, Induced; D009664:Norway; D010661:Phenylketonurias / Q000235:genetics*; D012606:Scotland; D012737:Sex Factors; D013223:Statistics as Topic