Subset of the association weight matrix (AWM).

<p>Column wise, the AWM compares correlations between phenotypes, and row wise AWM compares gene-gene interactions. Cells within the matrix correspond to normalized additive effects of gene-associated SNPs as obtained from genome-wide association studies. Squares of blue and yellow color gradients visualize the strength of standardized additive gene (SNP) effects. Abbreviations of phenotypic traits as defined in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124574#pone.0124574.t001" target="_blank">Table 1</a>.