It’s the other way around. It was once believed that a population of hundreds were needed but the DNA evidence proved it to be much smaller. If you have newer information that shows the DNA work done was wrong, please post it because I’ve been pulling out this trivia for years.
Hmm… the only cited sources in that article for a specific (effective) population size are also over 20 years old—the more recent sources just say it was likely a “small” number.
This article has a lot more detail on the various migration theories, but refrains from any specific size estimates:
It’s the other way around. It was once believed that a population of hundreds were needed but the DNA evidence proved it to be much smaller. If you have newer information that shows the DNA work done was wrong, please post it because I’ve been pulling out this trivia for years.
https://en.wikipedia.org/wiki/Genetic_history_of_the_Indigenous_peoples_of_the_Americas
Don’t know about the DNA but White Sands Footprints were dated over 20,000 years old, someone arrived before land bridge was available.
General rule in wildlife biology 50/500. Need 50 individuals to prevent extinction, 500 to have potential to evolve/survive threats.
Here are a couple papers that say those numbers are too low but I don’t have access to free copies. Second one a little beyond my understanding.
https://www.sciencedirect.com/science/article/abs/pii/S0006320713004576?via=ihub
https://www.sciencedirect.com/science/article/abs/pii/S0006320706002126?via=ihub
Hmm… the only cited sources in that article for a specific (effective) population size are also over 20 years old—the more recent sources just say it was likely a “small” number.
This article has a lot more detail on the various migration theories, but refrains from any specific size estimates:
https://en.wikipedia.org/wiki/Peopling_of_the_Americas
When research is old without being found wrong, it is more likely to be correct.