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. 1994 Sep;55(3):513–525.

VNTR alleles associated with the alpha-globin locus are haplotype and population related.

J J Martinson 1, A J Boyce 1, J B Clegg 1
PMCID: PMC1918386  PMID: 7915879

Abstract

The human alpha-globin complex contains several polymorphic restriction-enzyme sites (i.e., RFLPs) linked to form haplotypes and is flanked by two hypervariable VNTR loci, the 5' hypervariable region (HVR) and the more highly polymorphic 3'HVR. Using a combination of RFLP analysis and PCR, we have characterized the 5'HVR and 3'HVR alleles associated with the alpha-globin haplotypes of 133 chromosomes, and we here show that specific alpha-globin haplotypes are each associated with discrete subsets of the alleles observed at these two VNTR loci. This statistically highly significant association is observed over a region spanning approximately 100 kb. With the exception of closely related haplotypes, different haplotypes do not share identically sized 3'HVR alleles. Earlier studies have shown that alpha-globin haplotype distributions differ between populations; our current findings also reveal extensive population substructure in the repertoire of alpha-globin VNTRs. If similar features are characteristic of other VNTR loci, this will have important implications for forensic and anthropological studies.

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Selected References

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