Related Experiment Video
Updated: Feb 9, 2026

Visualizing Methane-Cycling Microbial Dynamics in Coastal Wetlands
Published on: January 31, 2025
Ancient human parallel lineages within North America contributed to a coastal expansion
C L Scheib1,2, Hongjie Li3, Tariq Desai4
1Department of Archaeology, University of Cambridge, Cambridge CB2 3DZ, UK. cls83@ut.ee tk331@cam.ac.uk malhi@illinois.edu.
None:
Little is known regarding the first people to enter the Americas and their genetic legacy. Genomic analysis of the oldest human remains from the Americas showed a direct relationship between a Clovis-related ancestral population and all modern Central and South Americans as well as a deep split separating them from North Americans in Canada. We present 91 ancient human genomes from California and Southwestern Ontario and demonstrate the existence of two distinct ancestries in North America, which possibly split south of the ice sheets. A contribution from both of these ancestral populations is found in all modern Central and South Americans. The proportions of these two ancestries in ancient and modern populations are consistent with a coastal dispersal and multiple admixture events.
Related Concept Videos
Lineage Commitment
Binet's Contribution to Measures of Intelligence
Parallel Processing
Parallel Resonance
Resistors In Parallel
Wechsler's Contribution to Measures of Intelligence

