Fig. 7

a Identified conserved counterparts of human lncRNA transcripts in four species classified according to the type of sequence conservation. Positional identity—the transcripts display only positional conservation; locus identity—significant sequence similarity in transcript-gene alignment detected; exonic identity—besides locus identity, there is also detectable sequence similarity in a transcript-transcript alignment. b The extent of the overlap with conserved human lncRNAs in the four analyzed species. c The color of the dots represents the species in which a given human transcript is conserved. The exonic identity is represented by the X axis, while locus identity is shown on the Y axis