Articles tagged with Ancient Dna
Researchers have discovered fossils of ancient chromosomes in the skin of a 52,000-year-old woolly mammoth, allowing them to assemble the genomes of extinct species. The discovery provides insights into the history of life on Earth and enables scientists to study the evolution of genes and organisms.
A team has assembled the genome and 3D chromosomal structures of a 52,000-year-old woolly mammoth for the first time. The preserved chromosomes revealed the mammoth's genomic organization and active genes in its skin tissue.
African DNA and ancient DNA research is poised to dramatically increase, but African scientists remain underrepresented. A new paper outlines a bold vision for an equitable future, including training more African scholars and improving scientific literacy.
New research suggests that the plague may have contributed to the population decline of Stone Age farmers in Scandinavia and Northwestern Europe. Analysis of ancient DNA from bones and teeth found that 17% of individuals were infected with the plague, indicating its common presence during the late Stone Age.
The study, published in PNAS, used ancient dingo DNA to analyze the genetic landscape of dingoes before European settlement. The research found that modern-day dingoes retain much of their ancestral genetic diversity and are distinct from domestic dogs.
Researchers reconstructed ancient genomes of Plasmodium vivax and Plasmodium falciparum malaria parasites to study their worldwide spread. The analysis revealed that European colonizers introduced P. vivax to the Americas, while military activities in Europe facilitated the spread of P. falciparum.
Researchers at Harvard University have successfully sequenced the genome of the extinct little bush moa, providing new genetic evidence about its sensory biology. The study sheds light on how and why some birds evolved to become flightless, offering clues for future de-extinction efforts.
Researchers at Clemson University discovered that certain Neanderthal-derived genetic variations are more common in people with autism than in the general population. These findings suggest long-term effects of ancient human hybridization on brain organization and function, potentially leading to earlier diagnostics.
Researchers analyzed ancient DNA data from 424 individuals to reconstruct Avar community structures and social dynamics. They found strict patrilineal descent systems, female exogamy, and levirate unions, suggesting females played a key role in promoting community cohesion.
Researchers analyzed a 40-fold high-coverage genome from a historical museum specimen and found no inbreeding or detrimental mutations, indicating the species' ability to adapt to long-term low population size. The study suggests that European colonization was a key factor in the blue antelope's extinction.
A recent study has uncovered new insights into the evolution of microsatellites in ancient and modern Adélie penguin genomes. The research found that microsatellite length remained remarkably stable over thousands of years, with some loci persisting for over half a billion years.
Researchers reconstructed Emperor Wu's face using DNA from his remains, finding he had brown eyes and dark to intermediate skin. The study also suggests the emperor's death at age 36 may be linked to a stroke.
Researchers analyzed well-preserved microbiomes from 4,000-year-old teeth in Ireland, providing a snapshot of oral health in the past. The study found evidence of dysbiosis and an unusual abundance of S. mutans bacteria, suggesting that our ancestors' mouths differed significantly from ours.
A genetic variant reducing IKZF1 expression increases B-cell ALL risk in Hispanic/Latino kids, with ancient DNA tracing its emergence ~13,000 years ago from Indigenous American ancestors.
Researchers analyzed ancient vessels to find evidence of cacao DNA and methylxanthine components, revealing widespread use among pre-Colombian cultures. High diversity among ancient strains suggests cross-breeding to adapt to new environments.
Researchers analyzed Japanese wolf and dog genomes, revealing genetic distinctness from gray wolves. Japanese wolves are also linked to the origin of modern dogs in East Asia.
Researchers at Binghamton University have developed a new technique to extract usable DNA from bones of fire victims, allowing identification through dental records or DNA testing. The method uses two different techniques to extract DNA, one suitable for temperatures below 350 degrees and the other for hotter fires.
The study of ancient genomes has shed light on the evolution of modern humans, revealing genetic changes that distinguish us from Neanderthals and Denisovans. These findings suggest that population-level advantages, such as increased connectivity and access to resources, played a significant role in shaping human migration patterns.
A study found an insertion of DNA shared by apes and humans but missing in monkeys that affected tail length. The insertion, called AluY, influenced alternative splicing to result in a variety of tail lengths.
DNA analysis of ancient Bahraini remains shows the presence of a malaria-protective G6PD Mediterranean mutation in three samples, suggesting many people in ancient populations enjoyed protection from malaria. The discovery provides insights into human history and disease progression in the region.
Researchers identified six ancient individuals with an extra copy of Chromosome 21 and another with three copies of Chromosome 18, indicating care and appreciation from their communities. These findings suggest that children with Down Syndrome and Edwards Syndrome were not stigmatized but rather recognized as part of their societies.
Researchers identified six cases of Down syndrome and one case of Edwards syndrome in ancient human remains from Spain, Bulgaria, Finland, and Greece dating back to 4,500 years ago. The individuals were buried with care and special grave goods, indicating they were appreciated by their societies.
Fallow deer were first introduced to Britain by the Romans, not the Normans, and have been repeatedly moved by humans as a symbol of colonial power. Their strong association with Greco-Roman goddesses has driven much of their movements around the Mediterranean.
A 5,900-year-old DNA analysis in Denmark found two nearly complete population turnovers, with the hunter-gatherer population being driven out by farmer populations. The researchers suggest that both violence and new pathogens likely contributed to the mass deaths.
A new study reveals a larger number of transposable elements in the human genome than previously known, shedding light on their potential role in human diseases. The 'genomic time machine' approach allowed researchers to identify degenerate TEs that were missed in previous studies.
A new study of early Bronze Age examples from Luxembourg and Britain provides insights into family relationships in prehistoric communities. Genetic evidence reveals that children were buried with their biological mothers, suggesting a patrilineal descent system.
Researchers analyzed ancient fecal samples to assess what details of the ancient people's lives could be ascertained from these samples. The study found DNA fragments of human betaherpesvirus 5, adenovirus F, and other viral and bacterial genetic material from thousands of years ago.
Researchers have discovered genetic material of the pathogen Treponema pallidum in ancient Brazilian bones, indicating that humans suffered from diseases akin to syphilis over 2,000 years ago. This finding challenges existing theories about the spread of syphilis by Spanish conquistadors and suggests that treponematoses were already pr...
Researchers analyzed DNA from birch tar samples, finding similarities with modern human mouth microbes and increased bacteria associated with gum disease. The study suggests that ancient humans' frequent use of teeth for tasks may have led to poor oral health.
A $2.8M NIH grant will help unravel the mysteries of disease-causing DNA folding errors, with researchers exploring the 'folding mechanisms' implicated in certain genetic disorders and cancers. The study aims to develop an artificial version of the DNA compaction system, also known as synthetic biology.
A large-scale ancient human gene bank analysis revealed that genetic variants increasing MS risk were introduced by sheep and cattle herders 5,000 years ago. This finding explains the North-South Gradient of MS prevalence in Europe.
The study of 146 ancient Balkans reveals a diverse, cosmopolitan Roman Empire with African and Eastern European immigrants. The team identified three individuals of African origin and a large demographic influx from the Anatolian Peninsula during Roman rule.
Researchers found evidence of domesticated yak dating back 2,500 years in the southern Tibetan Plateau, revealing insights into animal domestication pathways and human adaptation to high-altitude environments. The discovery was made using a combination of ancient DNA sequencing and zooarchaeological analysis.
A recent study found that successive waves of migrations from Western Anatolia, central and northern Europe, and the Pontic-Kazakh Steppe shaped the Balkan population during the Roman Empire's reign. The influx of Slavic-speaking populations resulted in present-day residents having 30%–60% Slavic ancestry.
Researchers analyzed skeletal remains of ancient Egyptian baboon mummies from the site of Gabbanat el-Qurud, finding lesions and deformations indicative of malnutrition and lack of sunlight. The findings provide insights into how baboons were kept in captivity before their eventual mummification.
Researchers analyzed skeletal remains from medieval Cambridge to recreate everyday lives of residents, revealing diet, activities, and bodily traumas. A new study investigates the hospital's inhabitants, showing how a medieval benefits system operated, with selection criteria based on material want, politics, and spiritual merit.
A new study analyzing lice genetic diversity found that head lice arrived in the Americas twice – once with early human migrants and again during European colonization. This discovery supports existing theories on human migration and provides insights into how lice have evolved alongside humans.
Studies reveal subtle variations in time and geographical space between Sapiens and Neanderthals. The presence of about 2% of DNA of Neanderthal origin in present-day Eurasians varies slightly between regions.
Researchers found that Neanderthals carried human DNA from a now-extinct lineage of early modern humans, which interbred with them in Eurasia over 250,000 years ago. The study reveals that approximately 6% of the Neanderthal genome was inherited from modern humans.
Researchers analyzed DNA from 200-year-old fruit flies collected in Europe, revealing their surprising genetic similarity to modern flies. The study identified key genes that helped the flies adapt to changing environments, including a gene resistant to DDT pesticide.
A genetic study has decoded the lineage of 'Old Tom,' a famous killer whale in Australia, and found ancestral connections to modern-day New Zealand orcas. The research also reveals that the killer whales of Eden may have become extinct locally due to a lack of shared DNA with other killer whales globally.
A team of paleontologists has discovered the oldest record of sea turtle DNA in a fossil shell from Panama's Caribbean coast. The findings, published in Journal of Vertebrate Paleontology, date back approximately 6 million years to the upper Miocene Epoch.
Researchers have extracted ancient DNA from Caribbean parrots, revealing two species were more widespread and diverse in the past. The study helps explain how parrots became the world's most endangered group of birds, with many island populations gone extinct.
A new study has shed light on the origins of St Helena's 'liberated' Africans, who were brought to the island between 1840 and 1867. The research reveals that they most likely originated from areas between northern Angola and Gabon in West Central Africa.
Researchers successfully extracted ancient DNA from a 2,900-year-old clay brick, revealing 34 distinct taxonomic groups of plants. The most abundant sequences were from Brassicaceae (cabbage) and Ericaceae (heather), providing a unique biodiversity time-capsule for the ancient Assyrian site.
A recent study reveals that past climate changes and vegetation shifts played a key role in determining when and where early human species interbred. The research suggests that the overlap of habitats led to increased encounters and interactions among groups, increasing the chance of interbreeding.
A new study analyzed ancient DNA from Spanish settlements in the Caribbean and Mexico, revealing that cattle were imported from Africa early in the colonization process. This challenges previous historical records, which suggested cattle were only introduced by Europeans from Europe.
A groundbreaking analysis of historical DNA links tens of thousands of living individuals to enslaved and free African Americans at Catoctin Furnace. The study provides a new way to complement genealogical efforts and restore ancestral histories for African American communities.
A population genetics team identified genetic relationship between 23andMe users and enslaved Africans in Catoctin Furnace, Maryland. The researchers consider ethics of sharing results with descendants and other relatives, highlighting importance of proper consent and minimizing harm.
A KAUST-led team has compiled the first complete genome map of einkorn, an ancient grain that could help develop bread wheat varieties with enhanced disease resistance and improved hardiness. The study reveals a complex evolutionary history of wheat species, including gene flow between einkorn and wild cousins.
A new study using ancient DNA found that workers buried more than 500 years ago came from different parts of the Inca Empire, including Amazonia. The analysis supports historical documentation and archaeological studies, providing insights into the genetic histories and lifeways of Machu Picchu's occupants.
Researchers reconstruct two massive family trees from ancient DNA data, shedding light on the lives of a prehistoric European Neolithic community. The study reveals a strong patrilineal pattern, large family sizes, and a potentially fluid exchange network comprising many groups.
Researchers have identified 30 basic units of 'synteny' that exist in all butterflies and moths, dating back to their common ancestor with caddisflies. This study improves understanding of chromosome evolution in Lepidoptera and may provide insights into other animal or plant groups.
Recent studies reveal complex patterns of admixture in human populations, particularly in Africa and the Americas. In Africa, ancient introgression from Neanderthals and Denisovans contributed to increased genetic diversity, while in the Americas, modern admixture resulted in redistributed archaic ancestry.
A new study led by UCL researchers finds that a particular gene affecting nose shape is inherited from Neanderthals and may have been influenced by natural selection. The study used data from over 6,000 volunteers and identified 33 genome regions associated with face shape.
Researchers reconstruct bacterial genomes of Ice Age microorganisms, reviving ancient natural products and discovering new chemical diversity. The team uses synthetic molecular biotechnology to produce chemicals encoded by ancient genes, unlocking the secrets of Earth's past microbes.
A team of researchers has developed a non-destructive method to extract DNA from bones and teeth, allowing for direct attribution of cultural objects to specific individuals. The breakthrough enabled the recovery of ancient human DNA from a 20,000-year-old pendant, providing insights into Paleolithic societies.
A Cornell University-led project has reconstructed Balto's phenotype using ancient DNA extraction and analysis. The research reveals that Balto had a genetically healthier and less inbred lineage than modern breeds, with characteristics adapted to the extreme environment of 1920s Alaska.
A new study finds that modern-day Scottish, Welsh and Northern Irish people share a common genetic heritage with ancient Pictish populations, contradicting long-held assumptions of exotic origins. The research also reveals surprising genetic similarities between Picts and present-day groups in the UK.
Researchers found that individuals within two Xiongnu elite cemeteries exhibited extremely high genetic diversity, confirming the empire as a multiethnic entity. High status individuals showed lower genetic diversity, while those of lower status had higher heterogeneity, suggesting a diverse origin pool.