I wouldn’t have guessed that they’d ever get DNA from the dead of Pompeii, but they have. It’s not complete — heat isn’t compatible with DNA preservation — but they were able to make some mundane conclusions.
The man’s genome assembly had just 0.42x coverage, indicating that the reads had little overlap, and there were gaps. Still, according to Scorrano, the sequence was good enough to analyze certain aspects of the DNA. The results suggested the Pompeian man was genetically similar to modern Mediterranean populations and, when compared to other published genomes from ancient Rome, that he was closely related “to Imperial Roman Age individuals,” Scorrano says, adding that that’s what the team expected to find. But at the same time, he notes that Rome was packed with people from diverse genetic backgrounds back then. In fact, the markers of the man’s maternal and paternal lineages were absent among those previously published sequences, which suggests the region had high genetic diversity during that time.
The Italian Peninsula was “incredibly heterogeneous” when Vesuvius erupted—people were “coming from all over the empire” into Rome or into port cities like Pompeii, says University of Chicago archaeologist Hannah Moots, who did not participate in the study but has previously characterized the genomic pool of ancient Rome. It is exciting to have genomes from Italian regions outside Rome, she says, adding that looking at sites like Pompeii is “really interesting” because they can provide insights into more rural areas.
Mundane isn’t bad — it’s what was expected. And they did find some novel markers. Just learning that Roman society was diverse is a good reminder to all those people who think monocultures are superior.