02/09/2026
🐢 What tortoises taught us about speciation
A recent study of Sonoran and Mojave desert tortoises explores how species can diverge even when they still occasionally hybridize.
🧬 Using comparative genomics, GBIF-mediated biodiversity data and NASA UV data, researchers identified genes under positive selection linked to reproduction, cell division, chromosome segregation, vision and eye development.
The findings suggest that natural selection acting on important functional genes (not major chromosome changes) may help drive reproductive isolation and adaptation to different environments. 🏜️
Read more: 🔗https://www.gbif.org/data-use/3BGf6Rmcl0iKukFUJaMaAK/what-tortoises-taught-us-about-speciation