Incomplete Lineage Sorting and Hybridization Statistics for Large-Scale Retroposon Insertion Data
Fig 3
Schematic representation of all possible phylogenetic patterns.
For the markers n1—(AB)C, n2—(AC)B, and n3—(BC)A, their sum n is fixed (n = n1+n2+n3). The triangle reflects all possible combinations of n1, n2, and n3, whereby the values at the corners are (n1:0:0), (0:n2:0), and (0:0:n3) (counterclockwise from the upper corner). The respective trees indicate supported tree configurations (C-tree, A-tree, and B-tree), red balls consolidate insertion support for the given branches. The grey scale arrowheads within the triangle indicate the statistically significant combinations of supporting tree configurations shown at the corners of the triangle; the darker the arrow the more significant support for the corresponding tree, the lighter the arrow the less support and the more the branching resembles a polytomy. The circular area at the center of the triangle denotes the polytomy zone (ABC-tree, where n1 = n2 = n3). The trees on the outside edges of the central triangle indicate hybridization zones (B-fusion, C-fusion, and A-fusion, denoted as A(B)C hybridization (where n1≥n2, and n2>n3), A(C)B hybridization (where n1≥n3, and n2<n3), and B(A)C hybridization (where n2≥n3, and n1<n2), respectively).