Additional file 4: (.docx) Fig. S1. Summarised REVIGO treemaps plot for gene ontology enrichment analysis between the P. margaritifera albino versus black wild-type phenotypes. Fig. S2. Signalling pathways (sp) potentially impacted by genes deregulated in albino P. margaritifera compared with the black wild-type. Fig. S3. Composition plots of albino and black wild-type populations of pearl oyster P. margaritifera based on filtered SNPs called with Freebayes in both Juvenile and Mantle datasets.