Enriched in several structures, including germ line; gonadal sheath cell; head mesodermal cell; hypodermis; and sperm based on RNA-seq and single-cell RNA-seq studies. Is affected by several genes including daf-2; hsf-1; and sir-2.1 based on microarray; tiling array; and RNA-seq studies. Is affected by eighteen chemicals including Ethanol; manganese chloride; and Zidovudine based on RNA-seq and microarray studies.