Table 1.

Average coefficients of ancestry obtained from Structure at K = 4. The highest values of each samples are indicated in bold.

Regional seas	Cluster (K)
	1	2	3	4
N Adriatic	0.659	0.025	0.299	0.017
C Adriatic	0.719	0.064	0.147	0.070
Ionian	0.008	0.833	0.056	0.104
Tyrrhenian	0.043	0.083	0.749	0.125
Catalan	0.048	0.023	0.007	0.922
Balearic	0.103	0.338	0.078	0.481
Atlantic	0.538	0.145	0.213	0.104