Studies of ancient Maya genomes from multiple sites and time periods have revealed evidence of significant population diversity within the Maya world, both geographically and chronologically.

Different Maya communities at different times showed distinct genetic profiles that reflect local population histories, migration events, and degrees of connectivity with other populations.

The Maya world was not genetically uniform, and the peoples who built different Maya cities were not all identical in their genetic background.

At the same time, studies have found evidence for long-term continuity in some regions — genetic connections between ancient populations and their modern descendants that persist across thousands of years of occupation in the same landscape.

The Chichén Itzá study’s finding of continuity between the ancient chultún individuals and modern Maya from Tixcacaltuyub fits within this broader pattern of regional genetic continuity in some parts of the Maya world.