

Figure 3.
Length distribution of indel substitutions in Drosophilaconserved noncoding blocks. Because the length distributions of indels for intergenic and intronic conserved blocks do not differ significantly, they are plotted together. (A) Number of observations (nk) plotted by length (k). (B) Correlation of ln(nk) and ln(k). The Spearman coefficient of rank correlation between ln(nk) and ln(k) isR = −0.740 (P<2.4×10−5).











