Fig. 5

Synteny of Wnt genes in chordates. Genes and their relative position and orientation on chromosomes or scaffolds (numbers above lines) are represented by block arrows, color- coded by Wnt gene. Gray arrows on dotted lines indicate Wnt genes for which linkage has so far not been demonstrated. The phylogenetic relationship of chordate subphyla is shown on the left. Lancelets are represented by B. floridae, B. belcheri, and B. lanceolatum. Among tunicates, genome arrangements in C. savigni and C. robusta are shown. P. marinus and H. sapiens are vertebrate representatives. The data presented for B. floridae have been modified and extended from [25, 129]; this is the only cephalochordate for which Wnt10–Wnt3 and Wnt6–Wnt1–Wnt9 syntenic groups are linked on the same scaffold. Representative taxa are illustrated on the right (black silhouettes)