Enriched in several structures, including body wall muscle cell; germ line; male distal tip cell; oocyte; and somatic gonad precursor based on tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including cyc-1; swsn-1; and atfs-1 based on microarray and RNA-seq studies. Is affected by fifteen chemicals including methylmercury hydroxide; methylmercuric chloride; and stavudine based on RNA-seq and microarray studies.