Summary:

- The study found that modern humans and Neanderthals interbred multiple times, with Neanderthal DNA making up about 1-2% of the genome of non-African people today.
- Researchers analyzed DNA from 27 modern human genomes and found that Neanderthal DNA was more common in certain regions of the genome, suggesting it provided some evolutionary advantages.
- The interbreeding between modern humans and Neanderthals likely occurred in multiple waves, with the first major wave occurring around 50,000-60,000 years ago as modern humans migrated out of Africa.