Nuclear receptor that binds DNA as a monomer to ROR response elements (RORE) (By similarity). Required for proper cerebellum development (By similarity). Detectable from a late gastrula stage (10 hpf). Very weakly expressed in the midbrain region at the 14-somite stage. Expression in the midbrain intensifies and extends along the anterior- posterior axis as embryogenesis proceeded. At 2 dpf, strongly expressed in the developing eyes and midbrain region. At 3 dpf, expressed in the retina. Belongs to the nuclear hormone receptor family.