adamo
Junior Member
- Messages
- 2,120
- Reaction score
- 74
- Points
- 0
- Y-DNA haplogroup
- T1a1a3 (T-PF7443)
- mtDNA haplogroup
- H
The distribution of haplogroups in Sardinia appears strongly heterogenous. In particular the frequency of G-M201 is significantly higher in the north, and the haplogroup I-M26 is more easily represented in the central-eastern area, characterized by a reduced presence of haplogroup R-M269. The sub-haplogroup I-M26 appears heterogeneously distributed in relation to the ancestral collocation of surnames. The majority of male surnames carrying this haplogroup seem to have arisen in the central-eastern area of the island, characterized by a reduced presence of R-M269. The island's native population retreated to this area during Phoenician, Carthaginian and roman occupations. Their subsequent isolation and genetic drift allowed an increase of I-M26 frequency, which on the north of the island has a frequency significantly lower than what is expected. The isolation of the central-eastern (archaic) area of the island could also explain the distribution of other haplogroups. R-M269 has a low frequency in the central area and a high prevalence in the northern area of the island, which also suggests that it arrived via Corsica or the European continent after the earlier diffusion of I-M26 in Sardinia.
Last edited: