Balancing selection via life-history trade-offs maintains an inversion polymorphism in a seaweed fly.

The inversion also showed a sex-specific effect on the duration of the larval stage, with no significant difference among female genotypes (on average, αα: 9.0 days, αβ: 8.7 days, ββ: 9.0 days; glmm p = 0.57) but highly significant differences among males (glmm p < 0.001, Fig. 2b Supplementary Table 5 , Supplementary Fig. 3 ).

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