Apparent syntenic relationships between zebrafish and human clade B collagen genes. Apparent conserved synteny is dispayed for human gene COL11A1 with zebrafish loci NM_001083844 and XM_677653, of the human gene COL11A2 with locus NM_001079992, of the human gene COL5A1 with XM_685787, and of the human gene COL5A3 with both XM_001921860 and XM_688785; leading to provisional designation of the zebrafish loci as col11a1a, col11a1b, col11a2, col5a1, col5a3a and col5a3b, respectively. Changes in the order of genes in some instances between human and zebrafish is presumably due to differential chromosomal rearrangements during evolution. To determine conservation of synteny between zebrafish and human clade B procollagen chain genes, upstream and downstream genes on respective chromosomes in the NCBI ENTREZ D. rerio Tubingen and H. sapiens genome projects were manually compared.