” At the dawn of the Neolithic era, a young woman discarded a lump of ancient chewing gum made from birch tar into a shallow, brackish lagoon that drew fishers to the coast of southern Denmark.
Nearly 6,000 years later, researchers excavating the site spotted the gum amid pieces of wood and wild animal bone and from it have reassembled her complete DNA and so painted the broadest strokes of her portrait.
” The strands of DNA preserved in the gum point to a hunter-gatherer from continental Europe who had dark skin, dark hair and blue eyes. She lived near the lagoon, itself protected from the open sea by shifting sand barriers, about 5,600 years ago, according to carbon dating of the birch tar.
Alongside her DNA, the researchers found genetic material from duck and hazelnuts – presumed remnants of a recent meal – and at least 40 types of microbes.
” Anders Götherström said the latest work was exciting. “As for human DNA, these mastics may present an alternative source for DNA from where there are limited amounts of preserved bones. But even more exciting is the ancient microbial DNA,” he said. “The mouth is an exposed area of the body. It is possible that this type of material will outcompete bones when looking for DNA from ancient pathogens.”