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Much of our past is etched not in historical records, but in our DNA. Some genes reveal the untold, surprising roots of cultures, the struggle for survival through pandemics, and those that have remained virtually unchanged for millennia. Ancient DNA also challenges misconceptions and presents new mysteries to unravel.
10. The Columbian Exchange
The arrival of Europeans in the Americas sparked widespread epidemics among native tribes. This tragic event, known as the “Columbian Exchange,” began in 1492 when Christopher Columbus journeyed to the New World.
Before European contact, pathogens like tuberculosis existed in America, but none were as catastrophic as the diseases brought by ship—smallpox, measles, yellow fever, and the flu.
This vulnerability was initially attributed to Native Americans evolving in isolation for thousands of years. In 2016, scientists uncovered evidence supporting this theory by studying the Tsimshian nation’s DNA. Comparing ancient and modern groups, they identified significant changes in genes related to immunity.
Historical records describe the havoc smallpox wreaked on the Tsimshian people after contact with Europeans. A decrease in genetic diversity indicates that smallpox claimed 57 percent of their population.
The modern Tsimshian people’s genetics differ from their ancestors’. The ancient population had a genetic sequence adapted to local pathogens, while their descendants’ genes evolved through selective adaptation to survive the introduction of new diseases.
9. The Origins of the Irish
The heritage of the Irish can be traced back to a Neolithic woman and three Bronze Age men. Known as the Ballynahatty woman, her 5,200-year-old tomb was discovered in 1855 near Belfast. Her genome, sequenced in 2015, revealed a genetic connection to people from modern Spain and Sardinia. Intriguingly, her ancestors came from the Middle East.
During the Bronze Age, settlers from Eastern Europe arrived, with the trio of men having origins from the Pontic Steppe, a region spanning parts of Ukraine and Russia. This 4,000-year-old Bronze Age group was genetically closest to the modern Irish, Welsh, and Scottish populations.
Ireland is known for specific genetic traits, such as the ability to digest milk into adulthood and a condition called hemochromatosis, where iron is excessively retained in the body. This disorder was found in both the woman and one of the men, though each carried a distinct mutation. The man, but not the woman, possessed the genes required to consume milk. While none of the four individuals align completely with modern Irish genomes, they represent the ancestral groups that helped form the Celts.
8. The Koma Land People
The Koma Land people once lived in what is now Ghana, West Africa. If it weren’t for one remarkable characteristic, their culture might have been overlooked by archaeologists.
The Koma Land people left behind only unusual terra-cotta figurines. These imaginative sculptures portray both animal and human figures, sometimes blending the two into hybrid forms. They were discovered hidden in mounds.
Researchers considered extracting DNA from the artifacts to uncover their purpose. However, excitement was tempered by the fact that the arid climate and centuries of burial in hot sand likely caused any DNA to be too degraded for analysis.
Remarkably, the clay vessels still contained trace amounts of genetic material from what they once held. Even more astonishing was the discovery of plantain, banana, and pine tree residues—none of which were native to the region during the time (AD 600–1300). This suggests that the artistic culture maintained well-established trade routes across West Africa and the Sahara, the world’s largest hot desert.
7. Unchanged DNA
It’s incredibly rare to find living individuals whose DNA has remained almost identical for 8,000 years. The ancient world experienced widespread migration, leading to genetic mixing. However, mainland East Asia stands as the exception.
In 1973, human remains were discovered in Devil’s Gate cave, located in the Russian Far East. More recently, DNA was extracted from a Stone Age woman. Due to minimal genetic alteration since the Neolithic period, her DNA closely resembled that of certain present-day ethnic groups in the region.
This is particularly true for Tungusic-speaking groups, including Chinese populations like the Oroqen and Hezhen. The Ulchi people, who still speak Tungusic, also maintain a connection to this lineage.
Residing in a region where Russia borders China and North Korea, these people are remarkable for two reasons. Firstly, they maintained an ancient hunter-gatherer lifestyle until very recently. Secondly, they are direct descendants of the same population—essentially unchanged—of Neolithic hunters to whom the Devil’s Gate woman belonged.
6. Mota Man
Mota is a figure from Ethiopia who has completely reshaped our understanding of African migration. Though he passed away 4,500 years ago, his genetic legacy still speaks volumes. Until his discovery, it was believed that modern humans left Africa around 70,000 years ago, migrating through the Middle East, Europe, and eventually Asia, with farmers returning to the Horn of Africa from the Middle East and Turkey.
Named after Mota Cave, where his remains were uncovered, he became the first ancient African to have his genome sequenced. His age predates the accepted timeline of Eurasian migration, suggesting that another group might have returned to Africa before them. Mota lacked the genetic traits found in Eurasians, such as lighter skin and eye colors, and was unable to digest milk, unlike people from Turkey and the Middle East.
Further investigation into Mota's genetic makeup and the enigma of his ancient ancestors led researchers to an intriguing discovery: a connection to the 7,000-year-old LBK culture from Germany. If Mota’s Eurasian roots are tied to the LBK people, it would radically alter the timeline of when Eurasians first settled and dispersed throughout Africa.
5. Missing Mother
A long-standing Viking mystery was recently solved when scientists analyzed the tooth pulp from two royal individuals. Sven Estridsen, the last Viking ruler of Denmark, passed away in AD 1074. His tomb, along with that of his mother Estrid, is located in Roskilde Cathedral, where her remains were placed in a pillar near the altar.
The identity of the man in Sven’s grave is undisputed, but there has been historical skepticism surrounding the woman in the pillar and whether she truly was the king’s mother.
There’s a simple method for proving a direct mother-to-child connection: mitochondrial DNA (mtDNA), which is passed only from mother to offspring and remains unchanged over generations.
Sven’s mtDNA showed differences from the woman in the pillar at two distinct points. Not only does this prove she isn’t his mother, but her age also doesn’t align. While Estrid was said to be 70, the woman in the pillar appeared to be about 35.
Interestingly, the king had two daughters-in-law, both named Estrid, who also became queens. Given their youth, their name, and royal status, it’s plausible that one of them was the woman buried at Roskilde.
4. London’s Diversity
Nearly 2,000 years ago, the original Londoners made their home in the city. Four skeletons found in the Museum of London helped researchers uncover more about their heritage and physical features.
The most well-preserved skeleton belonged to the ‘Lant Street teenager,’ a 14-year-old whose DNA showed she was raised in North Africa. Her mitochondrial DNA (mtDNA) traced back to Southern and Eastern Europe. Despite having blue eyes, her skeletal traits resembled those of sub-Saharan people.
The ‘Mansell Street man,’ aged 45, had dark eyes and hair, which matched his North African maternal DNA. Growing up in London, he suffered from a bone disease linked to diabetes, a condition more commonly found today in white Western men.
A man found in a pit filled with mutilated bodies may have been a gladiator. Between the ages of 36 and 45, his life was marked by violence. He was not native to the area and carried mitochondrial DNA (mtDNA) linking him to Eastern Europe and the Middle East.
The ‘Harper Road woman’ (pictured above) was a Briton who adopted Roman customs. Her grave contained Roman artifacts. However, her DNA revealed an astonishing fact: though her body was female, her genetic makeup was male.
3. Blue-Eyed Caveman
In 2006, two skeletons were discovered deep inside a cave in northwest Spain. These Mesolithic men, who lived over 7,000 years ago, were in remarkable condition. However, only one man’s molar provided viable DNA for testing, and the findings challenged a previously held evolutionary theory.
The genome analysis of this man revealed unexpected features. Despite being a modern European, he had dark skin, dark hair, and blue eyes. This was unusual, as this group is typically associated with light skin. The blue eyes suggest that the genetic mutation for blue eyes occurred earlier than the one for light skin, reversing the earlier assumption about the order of these mutations.
The findings also dispelled another myth. Scientists had previously thought that a surge in human immunity only occurred when humans transitioned to farming, as they needed protection against animal-borne diseases. However, the hunter-gatherer Mesolithic man already possessed this immunity. His closest genetic relatives today are the populations of Sweden and Finland.
2. Powerful Greek Women
Historically, archaeologists believed that ancient Greek women were treated as little more than property. However, recent DNA evidence could challenge this long-held assumption.
A team of researchers from the University of Manchester traveled to Mycenae, Greece, aiming to uncover more about the founders of the citadel, which was the first city-state in Europe.
The tombs of Mycenae’s rulers contained 35 skeletons, but only four had sufficient DNA for analysis. Among them was one woman, whose discovery overturned previous assumptions. She was thought to be the wife of one of the other fully sequenced men, and her lavish burial was assumed to reflect her husband’s high status.
However, DNA testing and facial reconstruction revealed that the two were actually siblings. Experts now believe she held equal power and influence, suggesting that women could hold significant positions. The archaeologists who made this discovery feel that the previous misinterpretation was a result of male-dominated perspectives in early archaeology.
1. When Europeans Vanished
Australian researchers set out to solve one migration mystery, only to uncover another. Their investigation into whether farmers from Turkey had migrated to Europe around 7,500 years ago led them to examine skeletons from Germany and Italy. These ancient remains spanned cultures that existed between 7,500 and 2,500 years ago.
The study confirmed that the first pan-European people originated in Turkey and thrived there. However, for reasons still unknown, their genetic traces mysteriously vanished around 4,500 years ago.
Whatever triggered this migration, it was not a gradual shift. Around that period, an unknown historical event sparked a massive and sudden migration. The scale of this movement was so great that it reshaped Europe’s population and genetic heritage for good.
The identity of this enigmatic group and the reasons behind their mass relocation remain a mystery. A potential candidate for this migration is the Bell Beaker people from the Iberian Peninsula, who are also believed to have influenced the Celtic languages.
