Table 1.

Foxn1 and its orthologs and paralogs through evolution (adapted from 46)

Table indicates the presence or absence of Foxn1, Foxn4, Foxn4b, and Foxn4l in different subphyla or superclasses. Based on sequence and synteny homology, Foxn1 and Foxn4 are thought to have arisen from a common ancestor gene, Foxn4b. Green denotes the presence of the gene in the genome.