Phylogenomic Evidence for Ancient Hybridization in the Genomes of Living Cats

Using genome-wide data, this study showed that the felid family tree is not a simple bifurcating set of clean splits but is laced with signals of ancient interspecific hybridization. The authors documented widespread incomplete lineage sorting and gene flow among diverging lineages, demonstrating that different parts of the genome support different branching orders. They argued that introgression was a recurrent feature of felid evolution rather than a rare anomaly. The findings reframed how phylogeneticists interpret conflicting gene trees in cats and emphasized that reticulate evolution must be modeled explicitly to reconstruct felid history accurately. The study set an important precedent, encouraging later researchers to treat gene flow between diverging cat species as an expected feature of the family's deep history rather than a rare exception.