400,000-year-old teeth suggest Homo erectus interbred with Denisovans
Paleoproteomics analysis of Chinese Homo erectus fossils identified protein signatures consistent with Denisovan ancestry — the first molecular evidence of interbreeding between the two lineages, with traces that may persist in Southeast Asian and Pacific populations today.
- Dental proteins preserve far longer than DNA — these specimens pre-date any recoverable ancient DNA
- Denisovan-linked protein variants identified across multiple Chinese archaeological sites
- Potential genetic legacy detectable in present-day Southeast Asian and Pacific Island populations