Figure 2

An example of read distributions of genes in reference genome. The schematic diagram depicts the read distributions of AY609431 (A) and AY609632 (B) on pig chromosomes 3 and 2. The red curve shows the expression level (log2 of RPKM) and the pink bar denotes the genomic regions covered by reads in RNA-seq. The yellow bar shows the transcript structures of genes in UCSC. The pink lines highlight the linkage between exons which were supported by at least two distinct junction reads. The red arrows indicate the alternative 5' splicing in panel A and the retained intron in panel B. The plot (C) shows the distribution of the number of alternative splicing events occurred in each gene and including all four types of alternative splicing models in individual 2268.