Fig. 2: Distribution of transcript frequencies across transcriptomes and populations.
From: Evolution of novel genes in three-spined stickleback populations

a Number of transcriptomes each gene was found to be transcribed in shown as a stacked bar plot. Inset: same plot with log-scaled y-axis. Genes with expression levels >1FPKM were counted as expressed. b Numbers of genes found to be expressed in varying numbers of populations.