Fig. 3 A: number of peaks, grouped by number of species with these peaks in common, B: number of peaks, grouped by intra-specific frequency, C: peak intensity as boxplot (without outliers) for all peaks and for peaks with 100% intra-specific frequency, D: max. and mean intra-specific peak frequency of the 315 potential single-markers in other species (100% intra-specific frequency in only one species)