Fig. 3.

Hierarchical clustering analysis (HCA). (a) HCA of all of the samples. This largely confirms the groupings made by both phylogenetic and multivariate statistical methods; (b) “Zoom view” of a branch in the cluster. In the samples shown to be the most ambiguous by phylogenetic analysis and PCA, HCA analysis shows that only seven fragments distinguish them from one another. One can see the specific effects of band’s presence or absence on the clustering of S1, DS3 and DS4. It would appear that S1 and DS3 share two fragments (see arrows) more than do DS3 and DS4 and as such, the correct grouping would be to show S1 and DS3 in the same clade