Articles tagged with Ancient Dna
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Researchers have discovered a direct genetic link between ancient Native American remains and their living descendants using mitochondrial DNA analysis. The study, published in PLOS ONE, found three maternal lineages from ancient times to the present, providing a unique connection between oral traditions and genetic evidence.
Ancient DNA analysis confirms Yersinia pestis as the cause of the Justinianic Plague. The results provide insights into the phylogeny and origin of this plague, contradicting previous theories. This breakthrough sheds new light on a major pandemic in European history.
Researchers used ancient DNA to reconstruct past plankton communities in the Black Sea, shedding light on climate-driven changes and human impact. The study found that marine ecosystems are highly sensitive to climate change and human disturbances.
Researchers from the University of Adelaide's Australian Centre for Ancient DNA extracted ancient DNA from two specimens and compared it to extinct relatives. They found that the Falkland Islands wolf diverged from its closest living relative around 16,000 years ago, revealing a 16,000-year-old island colonization process.
Researchers sequenced complete mitochondrial genomes from ancient Polynesian samples, revealing three individuals with no recent maternal ancestor in common. This suggests a diverse founding population and challenges previous theories about the pathways of great migration across the Pacific to New Zealand.
A novel genetic study led by CU-Boulder postdoctoral researcher Jessica Metcalf has clarified the native diversity and distribution of cutthroat trout in Colorado, revealing a single surviving population outside its native range. The study also confirmed the extinction of two previously unknown cutthroat strains, including one from the...
A study using ancient DNA from archaeological sites found that gray whales had a substantially larger population before whaling and experienced a sharp recent decrease, consistent with whaling as the cause. The research suggests a pre-whaling decrease in population size of about 78,000 to 116,000 individuals.
Scientists have discovered that antibiotic-resistant genes existed in ancient DNA from 30,000-year-old permafrost. This finding suggests that resistance is a natural phenomenon that predates modern clinical antibiotic use.
A Washington State University student's research has challenged a widely held assumption on the best way to analyze ancient DNA in anthropological and forensic investigations. Direct sequencing was found to be as effective as cloning in analyzing degraded DNA, with potential cost savings and time efficiency benefits.
A recent genetic study has overturned current thinking on the origins of European farming populations. The research, published in PLOS Biology, found that these early farmers were more closely related to populations living in modern-day Turkey, Iraq, and other parts of the Ancient Near East than to local hunter-gatherers.
Researchers have successfully recreated mammoth haemoglobin using ancient DNA from Siberian specimens. The team's findings reveal unique physiological adaptations that allowed mammoths to survive in harsh Arctic conditions, enabling them to cool their extremities and minimize heat loss.
Researchers found a surprising connection between ancient caribou bones and a massive volcanic eruption that blanketed the region with ash 1,000 years ago. The study suggests that changes in local wildlife may have been linked to environmental changes caused by the eruption.
Researchers overcome DNA contamination hurdle to analyze 30,000-year-old human DNA using modern sequencing techniques, providing insights into the evolution and prehistory of our species. The study allows scientists to directly glimpse into the genetic makeup of ancient humans who lived tens of thousands of years ago.
Researchers uncovered genetic fossils of woolly mammoths and ancient American horses in permafrost samples dated to between 7,600 and 10,500 years. The study challenges the conventional view that these species disappeared from the Americas about 12,000 years ago.
Researchers used DNA samples from frozen dirt to revise the history of woolly mammoths and ancient horses in North America. The analysis shows that these animals survived until at least 10,000 years ago, contradicting previous extinction theories based on fossil bones.
Researchers discovered ancient DNA samples in permafrost soil, dating back to between 10,500 and 7,500 years ago, indicating that mammoths and prehistoric horses roamed the area for 2,600-5,600 years longer than previously assumed. This finding sheds new light on the extinction of these species.
Ancient DNA analysis reveals new horse species in Eurasia and South America, with the Cape zebra found to be a large variant of the modern Plains zebra, while a small hippidion horse was discovered in South America. A new ass species also appears related to European fossils dating back 1.5 million years.
Researchers at the University of Warwick discovered that an ancient form of barley could survive water stress better than modern varieties. The study found that a mutation in six-rowed barley led to its transformation into two-rowed barley, which was cultivated for over three millennia.
Researchers successfully retrieve DNA from ancient macrofossils up to 26,000 years old and dried museum beetle specimens up to 188 years old using a non-destructive DNA extraction method. This breakthrough has significant implications for population genetic studies and reconstruction of ancient biodiversity.
Ancient DNA and palaeontology researchers analyzed coprolites from giant extinct birds to build a detailed picture of an ecosystem dominated by these species. The findings suggest that some moa grazed on tiny herbs, while others are threatened or rare due to their extinction.
The researchers sequenced the mammoth's nuclear genome, yielding information about its evolution and extinction. They found that woolly mammoths separated into two groups around two million years ago and eventually became genetically distinct sub-populations.
A new DNA study from the University of Adelaide has challenged long-held claims of pre-historic Polynesian contact with South America. The study found no evidence to support the idea that chickens were introduced to South America by Polynesians before Spanish arrival.
A new study published in PLOS ONE successfully extracted and analyzed authentic DNA from ancient Viking skeletons, avoiding contamination issues. The analysis revealed that the Vikings were genetically diverse and showed no evidence of extraneous DNA.
A novel method for sequencing ancient DNA has been developed using the Genome Sequencer FLX system, enabling researchers to study extinct animals with unprecedented accuracy. The technique involves extracting DNA from hair shafts, which are more undamaged and uncontaminated than traditional samples.
A research team has found ancient bacteria with active and living DNA, marking the oldest finding of organisms containing life on Earth. The discovery sheds light on cell aging and regeneration processes.
A new DNA sequencing approach allows researchers to analyze ancient ecosystems in just a few hours, providing more accurate and complete information. This breakthrough helps scientists better understand past climates, species decline, and potential causes of extinction.
Recent research using genetic data analysis and simulation software challenges the common assumption that modern residents of a region are direct descendants of their earlier inhabitants. The study suggests that the Etruscan population may have been more diverse or socially elite, leading to little overlap with modern Tuscans.
Researchers used ancient and modern DNA to study the decline of Ctenomys sociabilis, a colonial tuco-tuco species. The analysis suggests that population bottlenecks and environmental changes led to the loss of genetic diversity, but also hints at the evolution of social behavior.
Researchers discover that crystal clusters in fossil bones can preserve ancient DNA, which is better preserved and contains longer fragments than untreated ground bone. This method holds promise for yielding more authentic results in the analysis of ancient DNA.
A recent study using ancient DNA extracted from fossilized bones of extinct American big cats has shed new light on their evolutionary history. The research reveals that the saber-toothed cats were a sister group to modern felines and diverged early on from their ancestors.
A recent study using ancient DNA has confirmed that all living lemurs on the island of Madagascar descended from a single primate ancestor. The researchers analyzed DNA from nine subfossil individuals and found that they are closely related to living indriids, but not to other extinct species.
Researchers at Oxford University extracted DNA from fossil eagle bones to study the extinct Haast's eagle, which was related to a small Australian wedge-tailed eagle. The eagle grew to be massive due to abundant prey and lack of predators.
A team of researchers analyzed ancient DNA from Joseph Merrick, aka the Elephant Man, to uncover the cause of his severe deformities. The study revealed that Merrick likely suffered from Proteus syndrome, while some experts suggest he may have had both Proteus syndrome and neurofibromatosis.
A team of scientists has discovered a group of enzymes capable of duplicating damaged genetic material, allowing cells to 'compromise' and replicate with a certain 'sloppiness'. This mechanism increases genetic diversity and enables natural selection, driving the evolutionary process.
Researchers at the Weizmann Institute of Science have revealed the molecular repair mechanism known as S.O.S. repair, which fixes DNA damage and introduces random genetic material to create a beneficial mutation. This discovery provides new insights into diseases like cancer and bacterial resistance to antibiotics.
Researchers have identified the binding structure of DNA and protein in ancient hyperthermophilic archaeons, revealing a more complex and interesting mechanism than previously thought. The study sheds light on how proteins attach to DNA to stabilize and protect it in extreme conditions.
A research team has discovered a key gene in the human telomerase enzyme, which could aid in diagnosing cancer. The discovery also provides opportunities for developing new treatments by inhibiting the enzyme.
A team of researchers found that Neandertal mitochondrial DNA falls outside normal human variation, indicating they did not contribute to the genetic makeup of modern humans. The study also confirms the origins of modern humans in Africa and suggests a divergence of 500,000 to 600,000 years ago.