Neighbour network analyses of diploid only (a, c, e) and both diploid and tetraploid (b, d, f) Central European Arabidopsis arenosa and A. lyrata based on (a, b) the low-copy nuclear CHS region; (c, d) the low-copy nuclear scADH region; and (e, f) the plastid region trnL-F. Only specimens deviating from the majority within each taxon are named. Taxon is given by colour: A. arenosa - black and A. lyrata - grey. Ploidal levels are given as circle - diploid and square - tetraploid.
Jørgensen et al. BMC Evolutionary Biology 2011 11:346 doi:10.1186/1471-2148-11-346