Geneticists map 'ghost' ancient DNA carried by every human for the first time
A team led by Priya Moorjani at the University of California, Berkeley developed the TRACE method and found traces of an unknown African population in the genomes of modern humans: 0.5% to 1% of DNA. The 'ghost' lineage split off about 800,000 years ago and mixed with human ancestors roughly 50,000 years ago, while an older lineage left traces in Denisovans.
Javlon Tursunov