Distribution of the 4,561 smORFs conserved in D. pseudoobscura. Venn diagram representing the distribution of the smORFs with start and stop codons in D. pseudoobscura and passing each of the different validation filters, and their combinations. Each circle is proportional to the size of the population it represents. Dp, D. pseudoobscura; Ka/Ks, ratio of non-synonymous (Ka) to synonymous (Ks) nucleotide substitution.
Ladoukakis et al. Genome Biology 2011 12:R118 doi:10.1186/gb-2011-12-11-r118