Figure 2

Principle coordinate analysis plots for expression patterns of individual tissue types and by sex. Variations in the expression profiles of (A) all genes annotated in the 31 various functional categories for level 2 gene ontology (GO) terms, (B) a subgroup of 187 genes involved in “response to stress” from GO functional categories, and (C) a subgroup of 96 genes involved in “xenobiotics biodegradation and metabolism” from KEGG pathways. Studied tissues were the adductor muscle (ad), gills (g) and hepatopancreas (hp). Male and female mussels are denoted as (M) and (F), respectively.