Figure 3.

Percentage identity plot (PIP) of part of the 'bare patches' region of the mouse X chromosome between the genes Nsdhl and Zfp185 [19]. The mouse genomic sequence is shown on the x axis, and the percentage identity (50-100%) on the y axis. Regions that are conserved between the two sequences and are greater than 50 bp in length are shown as lines within the plot. Confirmed and predicted exons are depicted as numbered black boxes along the top of the plot. Confirmed exons are also shaded in green within the plot, whereas putative exons are colored in purple. Repetitive elements are illustrated on the top line (grey pointed boxes are L1s, black pointed boxes are LINE2s, light grey triangles are SINES other than MIRs, black triangles are MIRs, dark grey triangles are LTR elements and dark grey boxes are other types of interspersed repeats; see [16,17] for details), alongside CpG islands (short dark grey boxes are CpG islands where CpG/GpC < 0.75, and short white boxes are CpG islands where the CpG/GpC ratio lies between 0.6 and 0.75). Computer predictions are shown for the putative genes in the ECRA4-A23 region above the plot, with gene predictions shown as blue boxes, open reading frames (ORFs) as pink boxes and sequence similarity with human ESTs as orange boxes.