Fig. 7
From: Isolation of blue-green eggshell pigmentation-related genes from Putian duck through RNA-seq
A hypothesis explaining that differential expression of biliverdin synthesis-related genes can cause blue-green eggshell colour. Gene names shown in red represent rate-limiting enzymes. The blue upward arrows represent upregulation in HBR compared to HQR. The blue downward arrow represents downregulation in HBR compared to HQR. The yellow upward arrows represent upregulation in BBR compared to HQR. The yellow downward arrow represents downregulation in HBR compared to HQR