Data from: Genomic variation across two barn swallow hybrid zones reveals traits associated with divergence in sympatry and allopatry

Elizabeth S.C. Scordato, Matthew R. Wilkins, Georgy Semenov, Alexander S. Rubtsov, Nolan C. Kane, Rebecca J. Safran & Elizabeth S. C. Scordato
Hybrid zones are geographic regions where isolating barriers between divergent populations are challenged by admixture. Identifying factors that facilitate or inhibit hybridization in sympatry can illuminate the processes that maintain those reproductive barriers. We analyzed patterns of hybridization and phenotypic variation across two newly-discovered hybrid zones between three subspecies of barn swallow (Hirundo rustica). These subspecies differ in ventral coloration and wing length, traits that are targets of sexual and natural selection, respectively, and are...
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