Fig. 3.—

Gene ontology (GO) categories of unique gene families in R. philippinarum among four Mollusca. The functions of 68 gene families were classified and subdivided into a total of 93 GO terms. However, the majority of gene families is only represented in this figure as follows three main categories: Cellular components (yellow), molecular function (green), and biological process (blue). The x axis denoted the related functional categories and the y axis denoted the number of gene models, which are associated with each GO categories.