A microRNA solves an evolutionary mystery of butterfly and moth wing coloration

A microRNA is the effector gene of a classic evolutionary hotspot locus 🧪
https://www.science.org/doi/10.1126/science.adp7899

Shows that a miRNA can drive repeated instances of adaptive evolution in animals
https://www.youtube.com/watch?v=xsjlZWldn8s&t=109s

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