
Logo plots of tails of a multilocus RNA called with incomplete locus information. (A) U1 snRNAs from the Lardelli data set aligned to all regular U1 loci of the genome, showing accumulation of post-transcriptional A-tails in the absence of TOE1. (B) The same data set as in panel A, aligned to single U1 snRNA gene loci, leading to erroneous post-transcriptional tail calls.










