Fig. 3
From: A subset of conserved mammalian long non-coding RNAs are fossils of ancestral protein-coding genes
Characteristics of GLCP-derived lncRNAs and unprocessed pseudogenes. a Fraction of exonic sequence overlapping transposable elements identified by RepeatMasker. b, c Comparison of the tissue specificity index [51] (b) and mean expression (c) for GLCP-derived lncRNAs, divided into a set of lncRNAs with sequence similarity to GLCPs and a set of those without (Other GLCP-derived). d, e Comparison of exonic length (d) and number of exons (e), averaged across all isoforms for each gene, between the indicated groups of lncRNAs and unprocessed pseudogenes