Figure 3From: Genome-wide identification of nuclear receptor (NR) superfamily genes in the copepod Tigriopus japonicusSimplified phylogenetic distribution of nuclear receptors in chordates and arthropods. This diagram was updated based on schematic features of the NR superfamily suggested by a previous study [34]. Both arthropod names and the official nomenclature names of chordates are given for each nuclear receptor. A colored box indicates the presence of a homolog, while the character X indicates the absence of the NR from the genome of that species.Back to article page