At least that’s the suggestion from one of the world’s largest ancestry DNA testing companies.

Last spring, Marketplace host Charlsie Agro and her twin sister, Carly, bought home kits from AncestryDNA, MyHeritage, 23andMe, FamilyTreeDNA and Living DNA, and mailed samples of their DNA to each company for analysis.  Despite having virtually identical DNA, the twins did not receive matching results from any of the companies.

In most cases, the results from the same company traced each sister’s ancestry to the same parts of the world — albeit by varying percentages.  But the results from California-based 23andMe seemed to suggest each twin had unique twists in their ancestry composition.

For more info on this phenomenon, check out the following websites:  

https://dnatesting.com/the-fascinating-trouble-with-twins-and-dna-paternity-tests/

https://www.cbc.ca/news/technology/dna-ancestry-kits-twins-marketplace-1.4980976