Conserved synteny among vertebrate species compared to human chromosome 4. Conservation of synteny for genes investigated in this study residing on human chromosome 4 compared to mouse, T. rubripes, T. nigroviridis and D. rerio. Numbers above boxes denotes chromosome numbers or scaffold names. Position of the genes (Mega base pairs) is given below each box. Genes are ordered according to their positions on the human chromosome. Genes linked in the other species are indicated with lines above boxes. Species name abbreviations are: Hsa (Homo sapiens), Mmu (Mus musculus), Tni (Tetraodon nigroviridis), Tru (Takifugu rubripes) and Dre (Danio rerio). The NPY receptors are indicated in darker color while loss of NPY receptor genes are indicated with striped boxes. White boxes indicate genes where the phylogenetic analysis is inconclusive but where position indicates orthology.