Figure 2From: Local synteny and codon usage contribute to asymmetric sequence divergence of Saccharomyces cerevisiaegene duplicatesNegative relationship between nucleotide sequence asymmetry and codon adaptation index (CAI) for 43 pairs of ohnologs in the S. cerevisiae genome. The sequence asymmetry measure on the x axis was calculated as the difference between unique nucleotide sites at the ancestral-like copy and the derived-like copy within an ohnolog pair. The y axis represents the difference in CAI values between the ancestral-like copy and the derived-like copy for the same ohnolog pair. There was a significant negative correlation between differences in rate asymmetry and CIA values for ohnologs (Kendall's tau = -0.453; p < 0.0001).Back to article page