highly significantP = 5.3 × 10 −181
While about 8% of the worm genome is arranged antisense to another gene (Thierry-Mieg & Thierry-Mieg, 2006 ), approximately 35% of increased and decreased transcripts were arranged in this manner, representing a highly significant enrichment ( P = 5.3 × 10 −181 , hypergeometric distribution (hgd)) (Fig 1 B).