Range: >70 %
||Carninci P, Yasuda J, Hayashizaki Y. Multifaceted mammalian transcriptome. Curr Opin Cell Biol. 2008 Jun20(3):274-80. p.276 right column 2nd paragraphPubMed ID18468878
||Katayama S et al. FANTOM Consortium. Antisense transcription in the mammalian transcriptome. Science. 2005 Sep 2 309(5740):1564-6PubMed ID16141073
||Antisense transcription (transcription from the opposite strand to a protein-coding or sense strand) has been ascribed roles in gene regulation involving degradation of the corresponding sense transcripts (RNA interference), as well as gene silencing at the chromatin level. "Although the number of
reports is still limited, it is probable that transcriptional
interference will be broadly investigated as we now
understand that more than 70% of genes are subjected
to bidirectional transcription [primary source]."