Fig. 1: The Principal Component Analysis plots shows the first and second principal components, and percent of variance explained by each principal component is noted in parenthesis on the axes.

a shows the FarGen dataset, where the labels show the samples’ region of birth, abbreviated as follows: NOR (Norðoyggjar), EYN (Eysturoy og Norðstreymoy), STR (Suðurstreymoy), VAG (Vágar og Mykines), SAN (Sandoy, Skúvoy, Stóra Dímun), and SUD (Suðuroy). Contours of kernel densities are shown for each label, and the marginalized densities are shown in the top and right of the plot. b shows the PCA of the merged genotype dataset, where the labels show the origin of the samples, abbreviated as follows: fae (Faroe Islands), fin (Finland), nfe (non-Finnish European).