Distances within the wild mouse reference dataset. A) Between-group-PCA scatter plot of the first two PCs. B) Shape changes along PC1 and PC2 (from gray to red in positive direction). C) Distance categories - all pair wise distances within a category are plotted. Only the category "M. mac /M. spre intraspecific" represents two comparisons - the lower point the M. macedonicus and the upper point the M. spretus intraspecific distances between the two populations each. Whiskers represent range of observed correlations.
Boell and Tautz BMC Evolutionary Biology 2011 11:306 doi:10.1186/1471-2148-11-306