Forum: Too Lazy BBS

Australasian genetics found in South America

From RonO@rokimoto557@gmail.com to talk-origins on Fri Apr 24 10:41:47 2026

From Newsgroup: talk.origins

https://www.science.org/content/article/people-settled-south-america-three-distinct-waves-surprising-genetic-diversity

https://www.nature.com/articles/s41586-026-10406-w

https://www.cell.com/current-biology/fulltext/S0960-9822(26)00429-X

https://www.science.org/content/article/polynesians-steering-stars-met-native-americans-long-europeans-arrived

The researchers looked at ancient and current indigenous individuals and
claim that South America looks like it was populated by 3 major waves of migration. There were also minor infusions of polynesian genetics, and
they found evidence of australasian genetics that were not the same as
the similar polynesian genetics. Apparently the same australasian
sequences show up in fossil and extant humans. They do not have an explanation for why these individuals could have the same 2% of their
genome coming from that part of the world. They posit that the
australasian sequences have some selective advantage, but 2% of a genome
is a large fraction to maintain by selection. My guess is that it has
been maintained by inbreeding among the individuals that shared those
past ancestors.

Ron Okimoto

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