Fig. 3: Genes mirror geography in the Alps.
From: Climate-induced range shifts drive adaptive response via spatio-temporal sieving of alleles
A Geographic sampling of Alpine populations. Black dashed contours and colour gradient reflect the probabilistic inference of the origin of the Alpine expansion, calculated via a time difference of arrival (TDOA) algorithm on the directionality index ψ. An eastern origin for the Alpine lineage around the regions of Monte Baldo (1) and the western Dolomites (2) is inferred. B Genetic structure of Alpine individuals inferred via principal component analysis (PCA) of whole-genome sequences reflects geography. C Elevation of populations in metres above sea level. In all panels, samples are represented as triangles coloured according to their coordinates in the first two principal components of genetic space (as shown in B). Population representations in A and C reflect population means of individuals.
