Plot of log2 nBGT levels versus GC rate for Buchnera genes. The bivariate normal ellipse (% = 0.95) is drawn in black and the four main areas are delimited by the median of the gene GC rate parameter and by the first and fourth quartile of the mRNA abundance level variable. Pearson correlation coefficient (R2) is shown. The names of the genes outside the ellipse in the four zones are specified.
Viñuelas et al. BMC Genomics 2007 8:143 doi:10.1186/1471-2164-8-143