DNA analysis suggests first Australians arrived about 60k years ago
8 days ago
- #Genetics
- #Human Migration
- #Archaeology
- A new DNA study suggests the first humans arrived in Australia about 60,000 years ago via two distinct routes.
- The genetic evidence now aligns more closely with archaeological findings, which place arrival at around 65,000 years ago.
- Previous genetic studies suggested a later arrival, between 47,000 and 51,000 years ago, creating a gap with archaeological records.
- The study analyzed 2,456 mitochondrial DNA samples from Indigenous Australians and New Guineans, one of the largest such studies in the region.
- Researchers developed a correction curve for mutation rates, supporting the 'long chronology' theory of early human settlement.
- Migration routes included paths from the Philippines and Sulawesi, as well as a southern route involving significant sea voyages.
- Some scientists remain skeptical, calling for more research to confirm the genetic timeline and resolve the debate between 'short' and 'long' chronologies.
- Future studies, including whole genome sequencing and ancient DNA analysis, may provide further clarity on the timing of human arrival in Australia.