ArticlebioRxiv : the preprint server for biology2026
Opposing behavioral roles for a single gene in a species with a supergene polymorphism.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Behavioral trade-offs, such as between territorial aggression and parental care, require coordination among neural and genetic mechanisms that influence opposing phenotypes. In some systems, including the white-throated sparrow, this coordination has been proposed to be mediated in part by chromosomal inversions that bind together multiple genes associated with alternative strategies. Here, we demonstrate that opposing components of a life-history trade-off can be linked, via alternative alleles inside a chromosomal rearrangement, to a single pleiotropic gene. In white-throated sparrows, a species with polymorphic aggressive and parental behavior, the gene encoding the neuromodulator vasoactive intestinal peptide (VIP) lies within an inversion-based supergene. Working with a free-living population, we found that
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