Fig. 6
From: Multi-omic insights into the formation and evolution of a novel shell microstructure in oysters
Evolution of the Pif_LamG3_cluster in molluscs. Gray background boxes show the gene cluster of Pif and LamG3. Right squares show the molecular evolution of gene structure. Numbers in brackets indicated the order of molecular evolution events. Asterisks indicate the periostracal groove. Yellow color in the representative model of mantle indicates the expression regions of Pif (CNI_013832-RA), while blue color indicates the expression regions of LamG3 (CNI_014385-RA and CNI_014386-RD). The detailed information of spatial expression patterns of the three genes in the mantle tissue of C. nippona have been shown in Figure S20 (Additional file 1). White arrows symbolize the end of the gene expression region. The names of shell layers which SMPs involved in are marked with colors in different genes (yellow for Pif, blue for LamG3). Shell layers: prismatic layer (PL), foliated layer (FL), chalky layer (CL). RLCD(s) means the repetitive low complexity domain(s)