Fig. 1.

Characteristics of lncRNAs in the livers of chickens (Gallus gallus). a. the expression level of lncRNAs (log₁₀FPKM) along the Gallus gallus chromosomes. It comprises six concentric rings, and each corresponds to a different sample. They are mature livers (M1, M2, and M3) and immature livers (IM1, IM2, and IM3) from outer to inner, respectively. b. Distribution of different types of lncRNAs. The antisense, intron, intronic, sense, and intergenic lncRNAs are represented by different concentric rings from inner to outer, according to the loci of lncRNAs in the genome. c. Length distribution of lncRNAs and mRNAs. d Exon number distribution of protein coding transcripts and lncRNAs. e and f. ORFs length distribution of coding transcripts and lncRNAs, and the average value were shown in these two figures