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Two-way ANOVA and Tukey post hoc analysis reveal that the PER2-GG/PER3B-AG combination is predictive of seasonality in males. Average SPAQ scores were higher in males with the PER2-GG/PER3B-AG genotypic combination than in males with other genotypic combinations (Genotype: F1,217 = 4.312, p = 0.039; Gender: F1,217 = 0.005, p = 0.946; Genotype × Gender: F1,217 = 1.650, p = 0.200). Error bars denote SE. A, B denote significant differences for Tukey post hoc analyses.
