Figure 2From: Mutations within lncRNAs are effectively selected against in fruitfly but not in humanMcDonald-Kreitman test for lncRNA exons and introns. Small intronic sequences (≤86 nt, disregarding the first 6 nt and last 16 nt) were used as a proxy for neutrally evolving sequences. *** P <0.001, ns: not significant.Back to article page