One proposal is that antisense RNAs are involved in regulating gene expression through RNA-RNA base pairing.A few DNA sequences in prokaryotes and eukaryotes, and more in plasmids and viruses, blur the distinction between sense and antisense strands by having overlapping genes.. 
Ẹ̀rù sì ń yọ mí bá láìjẹ́ gbèsè....ìwòyí Ìjẹ̀bú, mo ti tànàá déìwòyí Ìjẹ̀bú mo ti tàná dé  ìwòyí Ìjẹ̀bú, mo ti tàná dé.. 