For some factors, poorly bound regions are preferentially found in protein coding sequences. The percentage of ChIP/chip peaks are plotted in non-overlapping cohorts of 200 peaks that are in protein coding (red), intronic (blue), and intergenic (green) sequences. Results are shown for cohorts down the rank lists to the 25% FDR cutoff. The percentages for each class of genomic feature are indicated as horizontal dotted lines in corresponding colors to the solid data lines. The most highly bound regions are to the left along the x-axis and the location of 1% FDR threshold is indicated by a black, vertical dotted line. Shown are the results for the (a) DL 3, (b) HRY 2, (c) RUN 1, and (d) SNA 2 antibodies.