The genetic structure of Arabidopsis thaliana in the south-western Mediterranean range reveals a shared history between North Africa and southern Europe.

Mantel tests of pair-wise geographic distances and genetic distances, measured as F ST or as percentage of allele differences among populations, detected highly significant correlations (0.59 < r < 0.82; P < 0.001; Figure 1 B) accounting for up to 67% of the variance.

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