Figure 5

Gene expression patterns are correlated with patterns of genetic variation. Residual SNP frequency (number of SNPs in a contig controlling for contig length and read number) was negatively related to overall expression levels ("A") and the number of tissues (head horn epidermis, thoracic horn epidermis, legs and central brain) in which differential expression was detected in a previous microarray study (N = 48 arrays, reported in Snell-Rood et al. 2010). Statistics are presented in Table 6.