Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in entrainment of circadian clock by photoperiod. Acts upstream of or within circadian rhythm; entrainment of circadian clock; and neural retina development. Predicted to be active in nucleus. Is expressed in several structures, including central nervous system; dorsal root ganglion; early conceptus; eye; and genitourinary system. Human ortholog(s) of this gene implicated in persistent hyperplastic primary vitreous. Orthologous to human ATOH7 (atonal bHLH transcription factor 7). [provided by Alliance of Genome Resources, Apr 2022]