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Figure 1 | Algorithms for Molecular Biology

Figure 1

From: A priori assessment of data quality in molecular phylogenetics

Figure 1

Statistical Geometry and Quartett Mapping. (A) The distances among four taxa {A,B,C,D} can always be represented in terms of six parameters: four splits of one taxon compared to the other three, and the two dimensions of central box. For ?=0 we obtain a tree. (B) Comparison of the sequence of a short PCR fragment of the homeobox sequence of a Hiodon Hox-A10 gene compared to three sets of homologous Hox-A10 sequences: the HoxA10a and HoxA10b paralogs of crown group teleost fishes and the unduplicated HoxA10 genes of chondrichtyes and sarcopterygians. The colored area is the convex hull of the data points, the big dot indicated the center of mass, from [10].

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