Additional file 4.

ML trees with the consensus topology for each orthologous segment from 18 to 19. The probability of the state of the rDNA cluster is shown as a pie at each node. The absence of a cluster is indicated in yellow, the presence in a pericentromeric region in black and the presence in a distal region in red.

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Cazaux et al. BMC Evolutionary Biology 2011 11:124   doi:10.1186/1471-2148-11-124