Figure 1From: FastMG: a simple, fast, and accurate maximum likelihood procedure to estimate amino acid replacement rate matrices from large data setsTree-based splitting example. The tree-based splitting algorithm would divide this hypothetical tree for a 9-sequence alignment into two sub-alignments (s1, s2, s3, s8) and (s4, s5, s6, s7, s9), corresponding to the left and right sub-trees, respectively.Back to article page