FIGURE 2.

Distribution of broad sense heritabilities for rat brain transcripts compared to permuted expression. The $R^{\mathit{2}}$ coefficients estimated via 1-way ANOVA for 99,376 brain transcripts using the true strain labels is compared to permuted expression values. The blue bars represent the distribution of $R^{\mathit{2}}$ coefficients for the data when permuted to assume no genetic influence, and the distribution of the true brain transcriptome in red represents the broad-sense heritability of RNA expression levels for brain transcripts.