Fig. 6 in Fig. 1 in Positive association between PTN polymorphisms and schizophrenia in Northeast Chinese Han population.

Fig. 6. Classification tree for the occurrence of a) V. lilljeborgi, b) V. genesii and c) V. geyeri at 327 sites. Numbers at each node indicate that the species was: absent/low population density/high population density, respectively. See Materials and Methods for details. The major splitter predictor and its split values are in bold whereas surrogates (i.e., predictors that distribute at least 90% of the cases to the same group as the primary splitter) are below the major splitter. Numbers in black circles indicate the number of splits. Photographs: Radovan Coufal (live individuals), Michal Horsák (shells).