A new study reveals that early Americans inherited Neanderthal and Denisovan DNA, possibly aiding disease resistance. Researchers analyzed the MUC19 gene, finding that one-third of Mexicans possess a Denisovan version, likely passed through Neanderthals. This 'genetic sandwich' suggests interbreeding between archaic humans and early modern humans. The study, published in Science, highlights the impact of ancient human intermixing on modern populations and calls for further research into the MUC19 gene's function.

Prepared by Olivia Bennett and reviewed by editorial team.