Figure 1From: Deep ancestry of mammalian X chromosome revealed by comparison with the basal tetrapod Xenopus tropicalisPositions of scaffolds containing orthologs of human X chromosome genes in Xenopus tropicalis chromosomes. Of 454 amphibian orthologs of human X-borne genes identified in this study, 442 (97%) localized to X. tropicalis chromosomes 2 and 8. Mosaic distribution of X orthologs (blue = XAR; green = XCR) suggests internal rearrangements after chromosomal fusions. cM – centimorgans, rdc - relative distance from centromere, cen – centromere.Back to article page