Fig. 4From: Evolution of hes gene family in vertebrates: the hes5 cluster genes have specifically increased in frogsComparison with hes gene locus among Xenopus, zebrafish and medaka. Chromosome number is described as “DRE23”. Pentagon arrows show genes a gene with 5′–3′ direction. Magenta shows hes gene. Broken arrow means same region (on DRE23). DRE, zebrafish; OLA, medaka; XLA, Xenopus laevisBack to article page