Riku Sayuj's Reviews > Who We Are and How We Got Here: Ancient DNA and the New Science of the Human Past

Conclusion Evidence Strength
Human populations are mixtures resulting from multiple migrations and gene flow throughout prehistory. Analysis and comparison of ancient and modern DNA from human populations around the world. Strong
Neanderthals and other “ghost populations” interbred with modern humans and contributed to their genetic diversity. Detection of Neanderthal DNA segments in modern human genomes, especially in non-Africans. Strong
Indo-European languages spread from the Yamnaya culture in the Pontic-Caspian steppe through migrations and cultural diffusion. Evidence of genetic affinity between ancient Yamnaya people and modern Europeans, Asians, and Native Americans. Weak
Ancient DNA can shed light on social inequalities, gender relations, and health conditions in past societies. Examples of genetic evidence for caste systems, female-biased migrations, disease resistance, and lactose tolerance in different regions and periods. Tentative