Pairwise Kinship Data Do Not Determine Multi-Way Admixture Diversity: A Group-Theoretic Illustration
Pairwise kinship data Fst is widely used to measure genetic diversity, but it fails for admixtures of three or more populations. This paper proves why using group theory: two different genetic scenarios can have identical pairwise overlaps but produce different admixture diversities (8 vs 4 in Z2,3). Simulations confirm this limitation. The lesson: use three-population f3-statistics instead of pairwise Fst for accurate admixture detection.
Authors
- Amirhossein MoradiSizkouhi (ORCID: https://orcid.org/0009-0000-3936-1733)
Publication Details
- Journal
- Zenodo (CERN European Organization for Nuclear Research)
- Published
- 2026-08-31
- DOI
- https://doi.org/10.5281/zenodo.22208457
- Primary Topic
- Genetic diversity and population structure
- Type
- preprint