The origin of Hsa10. (A) A model for the evolution of Hsa10. No orthologs from Hsa10p are in our data set, so the location of the zebrafish chromosome segments corresponding to Hsa10p are as yet unknown. (B) Conserved syntenies of vertebrate loci are orthologous to Hsa10q. Accession nos. are listed in Supplementary Data at http://www.genome.org.