Revisiting the Evolution of Lactase Persistence: Insights from South Asian Genomes
Élise Kerdoncuff, Meaghan Marohn, Nathan Cramer, Sharmistha Dey, Sharon L. R. Kardia, Kumarasamy Thangaraj K, Laure Ségurel, Jinkook Lee, Aparajit Ballav Dey, Priya Moorjani
This study analyzes South Asian genomes to understand the evolutionary history of lactase persistence, finding that Steppe ancestry, not selection, explains most LP prevalence, with exceptions in two pastoralist groups.
bioRxiv · Nov 5, 2025 · PreprintEvolutionary Biology