Figure 2.

Correlations between CRM length and GC content (column 1) and degree of sequence conservation with seven Drosophila species. Values given are the Spearman correlation coefficients. Black bars indicate CRM sequences, gray bars indicate size-matched randomly drawn non-coding sequence. Asterisks signify that the correlation is statistically significant (Bonferroni-adjusted P < 0.05). Dsim, D. simulans; Dyak, D. yakuba; Dere, D. erecta; Dana, D. ananassae; Dpse, D. pseudoobscura; Dvir, D. virilis; Dmoj, D. mojavensis.