The biological peculiarity of Sardinia among the European and Mediterranean populations find a support in the consequences of the action of some microevolutionary factors that acted in time (founder effect, bottleneck, isolation, and internal gene flow). Moreover, the biological peculiarity of the Sardinian population located in the so-called “Archaic area” of the island could be a consequence of genetic drift and isolation actions. This hypothesis is supported by the highest incidence in the island of the mutation M26 of Y chromosome (33-41%) with respect to the other populations from Europe and Mediterranean basin. This high frequency could be due to the diffusion of men carrying that mutation, split by the continental ancestor group after the Last Maximum Glacial. The heterogeneity among the Sardinian subpopulations find a support in several decreases of the population, particularly charged to the ones of internal area of the island, deduced by historical demographic data of Census carried out in the 300 during the Pisan domination, and later by the Spaniards during the 600. In conclusion the historical demographic data allow to explain adequately the present biological structure of Sardinian population.

La deriva genetica ed il flusso genico interno hanno condizionato l’attuale struttura biologica della popolazione sarda?

SANNA, EMANUELE;CALO', CARLA MARIA
2006-01-01

Abstract

The biological peculiarity of Sardinia among the European and Mediterranean populations find a support in the consequences of the action of some microevolutionary factors that acted in time (founder effect, bottleneck, isolation, and internal gene flow). Moreover, the biological peculiarity of the Sardinian population located in the so-called “Archaic area” of the island could be a consequence of genetic drift and isolation actions. This hypothesis is supported by the highest incidence in the island of the mutation M26 of Y chromosome (33-41%) with respect to the other populations from Europe and Mediterranean basin. This high frequency could be due to the diffusion of men carrying that mutation, split by the continental ancestor group after the Last Maximum Glacial. The heterogeneity among the Sardinian subpopulations find a support in several decreases of the population, particularly charged to the ones of internal area of the island, deduced by historical demographic data of Census carried out in the 300 during the Pisan domination, and later by the Spaniards during the 600. In conclusion the historical demographic data allow to explain adequately the present biological structure of Sardinian population.
2006
Sardinia; mtDNA; Y chromosome; Isolation; Bottleneck
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11584/50041
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