Tuesday, May 27, 2025

Peruvian Match

Although our shared DNA segments with Peruvians and South American Indians are usually rather small, one of the larger, more reliable ones with with a Peruvian (judging by the Quechua surname and their other matches, although Bolivian origin is also possible, perhaps). Moreover, this person's shared segment with us is actually along a segment identified as "Indigenous Puerto Rico" by Ancestry, not Indigenous Bolivia and Peru. Although only 6.8 cM, we suspect it is picking up on the deeper, shared ancestry between the indigenous people who populated the Caribbean and their South American mainland cousins found in parts of Andean and lowland tropical South America. Our other matches above 6 cM with South American indigenous people had lower SNP counts and densities, so we suspect this Peruvian match is somewhat more reliable. Checking the matched segment on Gedmatch's chromosome compare features and DNA painter also points to the shared segment falling along our "Indigenous Puerto Rico" segment on part of Chromosome 14.

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