Overview
- A Cell study sequenced 12 high-quality cave-lion genomes and compared them with 20 modern-lion genomes to map relationships across Eurasia and North America.
- The data place the cave lion’s split from modern lions well over 1.5 million years ago, making it a deeply divergent Panthera species rather than a simple Ice Age form of the modern lion.
- Researchers found repeated, small pulses of gene flow from modern lions into cave lions, with higher levels of mixing during cold, glacial intervals when ranges shifted and met.
- The team identified 33 candidate mutations concentrated in genes tied to brain function, vision, growth and circulation, but they stress these are hypotheses about adaptation not proven functional changes.
- Cave lions vanished quickly about 13,000–14,000 years ago despite no long-term genetic collapse, a result that strengthens links between rapid ecological change, prey loss or human pressure and modern conservation and ethical debates over de‑extinction.