A polygenic explanation for Haldane's rule in butterflies

Tianzhu Xiong1, Shreeharsha Tarikere1, Neil Rosser1

  • 1Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138.

Summary

Hybrid incompatibilities in butterflies are not explained by dominance theory. Instead, unbalanced gene flow between sex chromosomes and autosomes causes these issues, particularly in females, suggesting polygenic hybrid incompatibilities are common.

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