Beyond the Sequence: How Neanderthal Genomics and Epigenetics Challenge the Modern Synthesis
When Svante Paabo was awarded the Nobel Prize in Physiology or Medicine in 2022 for his discoveries concerning the genomes of extinct hominins and human evolution, the world celebrated a triumph of ancient DNA sequencing. By extracting and reconstructing highly degraded genetic material from ancient bone fragments, Paabo and his team revealed that modern non-African humans share roughly one to two percent of their nuclear DNA with Neanderthals. On paper, that single digit seems modest, almost negligible. Yet the true revolution of ancient genomics extends far beyond calculating static percentage overlaps. It lies in understanding how identical or nearly identical genetic sequences can produce vastly different physical phenotypes, behaviors, and evolutionary trajectories. For decades, the bedrock of evolutionary biology has been the Modern Synthesis, established in the mid-twentieth century. This framework unified Darwinian natural selection with Mendelian genetics. Under the stric...