Updated Model for the Peopling of the Americas
Author Information
Author(s): Connie J. Mulligan, Andrew Kitchen, Michael M. Miyamoto
Primary Institution: University of Florida
Hypothesis
How long was the period of isolation for the proto-Amerind population before their expansion into the Americas?
Conclusion
The three-stage model for the peopling of the Americas remains valid, indicating a prolonged period of isolation followed by a rapid expansion.
Supporting Evidence
- The analysis confirmed the absence of an early expansion signal for the proto-Amerind population.
- A larger population increase was observed over a smaller period of time compared to previous analyses.
- The study suggests a period of isolation lasting at least 7–15 thousand years prior to expansion into the Americas.
Takeaway
A long time ago, people from Asia moved to the Americas, but they stayed in one place for a long time before spreading out.
Methodology
Bayesian skyline plot analysis of Native American mitochondrial coding genomes.
Potential Biases
Potential bias from the inclusion of non-Native American sequences in earlier analyses.
Limitations
The study relies on genetic data and may not fully account for archaeological evidence.
Participant Demographics
Native American mitochondrial coding genomes.
Statistical Information
Confidence Interval
95%
Digital Object Identifier (DOI)
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