Retention of synteny between C. savignyi and C. intestinalis chromosomes. Alignments (Brudno et al. 2007) between all C. savignyi and all C. intestinalis chromosomes were plotted by concatenating the chromosomes in each species and adjusting alignment coordinates accordingly. Unmapped reftigs and scaffolds and their alignments from both genomes (17% of C. savignyi and 46% of C. intestinalis) have been excluded. Where at least some portion of both the short (p) and long (q) chromosome arms of each of the C. intestinalis have been reconstructed, the boundary between arms is indicated by a minor tick mark on the X-axis. Alignments appear as dots because of their length relative to the displayed scale. The aspect ratio of the plot is one; the greater length of the Y-axis reflects the greater number of mapped fragments in C. savignyi.
