“…Several types of RNAs with no sequence homology to template genomes exist. This includes RNA-DNA differences (Blank et al, 1986;Ninio, 1991;Li et al, 2011;Bahn et al, 2012;Strathern et al, 2012;Bar-Yaacov et al, 2013;Knippa and Peterson, 2013;Zhou et al, 2013;Wang et al, 2016), post-transcriptional editing (Bass, 2002;Schaub and Keller, 2002;Chen and Bundschuh, 2012;Park et al, 2012;Wang IX et al, 2014a;Lee et al, 2015), post-transcriptional hyper editing (Porath et al, 2014) and polymerase template switching (Lee et al, 2007;Löytynoja and Goldma n, 20 17). Transcript fusion exp lains some noncanonical RNAs (Kumar et al, 2016;López-Nieva et al, 2019;Singh et al, 2019).…”