Fig. 2

Differential expression of candidate synaptic transmission genes. Each point represents one of the 554 candidate transcripts for which expression data were compared between ancestral (allopatric) and reinforced (sympatric) populations. Comparisons were made using all samples (left graph), males only (center graph) and females only (right graph). Effect size (log2 fold change) is plotted against average expression (log2 counts per million). Genes identified as significant at 0.05 level (after FDR correction) are denoted by larger gray points