Figure 1From: Patterns of intron sequence evolution in Drosophila are dependent upon length and GC contentThe relationship between intron length and the level of divergence between D. melanogaster and D. simulans for the combined dataset of 225 introns. A significantly negative correlation is found for all introns (Spearman correlation coefficient R s = -0.388, P < 10-4), first introns (R s = -0.451, P < 10-4) and non-first introns (R s = -0.304, P < 10-4).Back to article page