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  • Title: The genetic position of the autochthonous subpopulation of Northern Navarre (Spain) in relation to other basque subpopulations. A study based on GM and KM immunoglobulin allotypes.
    Author: Calderón R, Perez-Miranda A, Peña JA, Vidales C, Aresti U, Dugoujon JM.
    Journal: Hum Biol; 2000 Aug; 72(4):619-40. PubMed ID: 11048790.
    Abstract:
    GM and KM immunoglobulin (Ig) allotypes were tested in 118 autochthonous Basques from northern Navarre. The results are compared to those obtained for the same genetic markers in 6 other Basque subpopulations, 3 from Spain (Guipúzcoa, Vizcaya, and Alava) and 3 from France: Macaye, Saint-Jean Pied de Port, and Mauleon. The northern Navarrese appear genetically closer to the Alava and Saint-Jean Pied de Port subpopulations. The Basques present 3 GM haplotypes that are uncommon in Caucasian populations, suggesting that they have not been completely isolated either from Asian or African populations. The GM*1,17 23' 10,11,13,15,16 north Asian haplotype was probably the first to be introduced into the Basque area. The GM*1,17 23' 5* haplotype, considered an African genetic marker although also detected in Central Asia, would have reached the Iberian Peninsula through consecutive historic migrations from North Africa. The rare haplotype GM*1,17 23 21,28 results probably from a genetic recombination or crossing-over between the 2 common haplotypes GM*1, 17 23' 21,28 and GM*3 23 5*. It is also found with a low frequency in other neighboring regions and countries; but the possibility of its having been introduced through the main passage connecting western France and Spain during the Roman Empire and Middle Ages cannot be ruled out.
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