All 64 analyzed individuals were genetically male.

This was the first finding, and it established that the demographic profile of the chultún was distinctively and consistently male — a pattern that traditional skeletal analysis had been unable to establish with confidence because of the difficulty of sex estimation in juvenile remains.

Among the 64 individuals, 11 close-relative pairings were identified, meaning that 11 pairs of children were found to be first-degree or second-degree biological relatives.

Overall, 16 of 64 analyzed children — 25 percent — had at least one close relative in the analyzed assemblage.