Since the plasmid form of the AquAdvantage DNA construct, opAFP-GHc2, comprises the complementary deoxyribonucleic acid (cDNA) sequence of a Chinook salmon GH1 gene as an integrated transcriptional unit, sequence comparison of the Chinook (C) and Atlantic (A) salmon GH1 genes was performed in order to ensure the non-occurrence of cross contaminations. For this, a protein and nucleotide blast was studied with the sequences of salmon GH1.