Chromosomal inversions frequently underlie distinct phenotypic variation. A new study shows that in butterflies, inversion haplotypes accumulate deleterious mutations that prevent fixation in natural populations.
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Küpper, C. Metamorphosis of a butterfly inversion. Nat Genet 53, 264–266 (2021). https://doi.org/10.1038/s41588-021-00809-y
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DOI: https://doi.org/10.1038/s41588-021-00809-y