| pubmed-article:1970975 | pubmed:abstractText | Of the 645 Japanese subjects studied, we have identified 10 individuals heterozygous for a chromosome with the triplicated alpha-globin loci. The frequency of the triple alpha-loci was 0.008 in this population, while that of the single alpha-locus, i.e., alpha-thalassemia 2 gene, might be lower than 0.0008. Analysis of haplotypes using particular RsaI site polymorphism in the alpha-globin gene complex strongly suggests that the triple alpha loci may have had multiple origins in this population. | lld:pubmed |
