Cod_E_E_Commands.txt file is a list of all commands used for data analysis. SeasonSNPs.beagle file is a genotype likelihood file in beagle format with the 25 SNPs as selected by GRRF for differentiating spring and winter-spawned cod. SexSNPs.beagle file is a genotype likelihood file in beagle format with the 25 SNPs as selected by Fst for differentiating male and female cod.