Genome and life-history evolution link bird diversification to the end-Cretaceous mass extinction
Jacob S. Berv,
Sonal Singhal,
Daniel J. Field
et al.
Abstract:Complex patterns of genome evolution associated with the end-Cretaceous [Cretaceous-Paleogene (K–Pg)] mass extinction limit our understanding of the early evolutionary history of modern birds. Here, we analyzed patterns of avian molecular evolution and identified distinct macroevolutionary regimes across exons, introns, untranslated regions, and mitochondrial genomes. Bird clades originating near the K–Pg boundary exhibited numerous shifts in the mode of molecular evolution, suggesting a burst of genomic heter… Show more
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