Data availability statement
No new sequence data were generated during this study. Data for the four
case studies are available at NCBI BioProject
(https://www.ncbi.nlm.nih.gov/bioproject) under the following
accession numbers: Darwin’s finches: PRJNA263122 (Lamichhaney et al.
2015), Anopheles : PRJNA67511 (Fontaine et al.
2015), Drosophila : PRJNA554139 (Mai et al.
2019), Heliconius : PRJEB1749 (Martin et al. 2013). Metazoan
genomes are available at NCBI RefSeq
(https://www.ncbi.nlm.nih.gov/refseq/; O’Leary et al. 2016); for
individual accession numbers see Table S1. Multiple sequence alignments,
phylogenetic trees, and other results of this study are available at
DataDryad (DOI: 10.5061/dryad.kprr4xhb3).