May be involved in sexual development. Restrictively expressed in brain and developing germ cells, especially in spermatogonia, spermatocytes, spermatids, and sperm cells, and in developing oocytes, including early perinucleolus stage oocyte, late yolk vesicle stage oocyte, and oil drop stage oocyte. Expressed in early gastrula period, subsequently increases to a high level in late stage of gastrula period (bud stage) and lowers until the hatch period. Expressed in developing central nervous system of embryos, especially in mid-brain and mid-hind brain boundary. Seems to be restricted in central nervous system, especially in mid-brain and mid-hind brain boundary. Belongs to the DMRT family.