Abstract
This study has analyzed the haptoglobin genotype frequencies in over 900 samples from populations living on the Northern slopes of the Pyrenees. The results emphasize the importance of systematically determining the frequencies of the Hp1S, Hp1F, Hp2SS, Hp2FF, Hp2FS alleles. Hp1S was the predominant allele, the HpIS/Hp1 distribution varying between .5 and .69 as in most European populations. Hp2 alleles were observed in low frequency with differences in geographically distinct samples. Pyrenean populations in the western zones (Basques and Baronnies) were found to contain the Hp2FF allele while those in eastern regions, the Hp2SS allele. We have speculated that Hp2SS is as old as the Hp2FF, arising from southern Mediterranean areas, and suggest that Pyrenean groups have different origins.
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