Figure 2. (a ) The number of up or down regulated genes between the pairs of offspring groups (padj < 0.05 when tested with a log-fold-change threshold > 0.2). (b ) Venn diagram showing the number of differentially expressed genes (DEGs) between the pairs of offspring groups. The overlapping space between the circles indicates the number DEGs in both pairs of comparison. The abbreviation of the offspring groups is that the first letter indicates maternal parent and the second letter the paternal parent, where “T” is A. tenuis and “L” is A. loripes .