Fred Ruhe
Well-known member
Berv, J. S.; Singhal, S.; Field, D. J.; Walker-Hale, N.; McHugh, S. W.; Shipley, J. R.; Miller, E. T.; Kimball, R. T.; Braun, E. L.; Dornburg, A
Genome and life-history evolution link bird diversification to the end-Cretaceous mass extinction
Science Advances. 10 (31): eadp0114. doi:10.1126/sciadv.adp0114.
Absytacu
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 heterogeneity at this point in Earth’s history. These inferred shifts in substitution patterns were closely related to evolutionary shifts in developmental mode, adult body mass, and patterns of metabolic scaling. Our results suggest that the end-Cretaceous mass extinction triggered integrated patterns of evolution across avian genomes, physiology, and life history near the dawn of the modern bird radiation.
Enjoy,
Fred
Genome and life-history evolution link bird diversification to the end-Cretaceous mass extinction
Science Advances. 10 (31): eadp0114. doi:10.1126/sciadv.adp0114.
Absytacu
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 heterogeneity at this point in Earth’s history. These inferred shifts in substitution patterns were closely related to evolutionary shifts in developmental mode, adult body mass, and patterns of metabolic scaling. Our results suggest that the end-Cretaceous mass extinction triggered integrated patterns of evolution across avian genomes, physiology, and life history near the dawn of the modern bird radiation.
Enjoy,
Fred
