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Keyword: emptydna

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  • Oldest DNA from Africa Offers Clues to Mysterious Ancient Culture

    03/20/2018 5:30:57 PM PDT · by SunkenCiv · 37 replies
    Science ^ | March 15, 2018 | Ann Gibbons
    About 15,000 years ago, in the oldest known cemetery in the world, people buried their dead in sitting positions with beads and animal horns, deep in a cave in what is now Morocco. These people were also found with small, sophisticated stone arrowheads and points, and 20th century archaeologists assumed they were part of an advanced European culture that had migrated across the Mediterranean Sea to North Africa. But now, their ancient DNA -- the oldest ever obtained from Africans -- shows that these people had no European ancestry. Instead, they were related to both Middle Easterners and sub-Saharan Africans,...
  • Artificial Intelligence Has Found an Unknown 'Ghost' Ancestor in The Human Genome

    11/04/2021 9:18:43 AM PDT · by Red Badger · 64 replies
    https://www.sciencealert.com ^ | 25 OCTOBER 2021 | Peter Dockrill
    Denisova Cave in Siberia, Russia (Cheburgenator/ CC-BY-SA-4.0/Wikimedia Commons) =============================================================================== Nobody knows who she was, just that she was different: a teenage girl from over 50,000 years ago of such strange uniqueness she looked to be a 'hybrid' ancestor to modern humans that scientists had never seen before. Only recently, researchers have uncovered evidence she wasn't alone. In a 2019 study analysing the complex mess of humanity's prehistory, scientists used artificial intelligence (AI) to identify an unknown human ancestor species that modern humans encountered – and shared dalliances with – on the long trek out of Africa millennia ago. "About 80,000...
  • Humans Created Earliest Modern Artifacts in Europe, Research Shows

    05/17/2020 1:15:56 PM PDT · by SunkenCiv · 14 replies
    Science News ^ | May 12, 2020 | News Staff / Source
    In 2015, a research team led by archaeologists from the National Archaeological Institute of Bulgaria and the Max Planck Institute for Evolutionary Anthropology resumed work at Bacho Kiro Cave with the goals of clarifying the chronology and the biological nature of the makers of the artifacts. The researchers uncovered thousands of animal bones, stone and bone tools, beads and pendants and the remains of five human individuals... Using a state-of-the-art technology called Zooarchaeology by Mass Spectrometry (ZooMS), they identified human bone fragments and concluded that they were at least 45,000 years old -- a period coinciding with the arrival of...
  • The ancient history of Neandertals in Europe [120K ago]

    07/01/2019 9:36:13 AM PDT · by SunkenCiv · 25 replies
    EurekAlert! ^ | Wednesday, June 26, 2019 | Max Planck Institute for Evolutionary Anthropology
    Researchers at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, have retrieved nuclear genome sequences from the femur of a male Neandertal discovered in 1937 in Hohlenstein-Stadel Cave, Germany, and from the maxillary bone of a Neandertal girl found in 1993 in Scladina Cave, Belgium. Both Neandertals lived around 120,000 years ago, and therefore predate most of the Neandertals whose genomes have been sequenced to date. By examining the nuclear genomes of these two individuals, the researchers could show that these early Neandertals in Western Europe were more closely related to the last Neandertals who lived in the...
  • Descendant Of Stone Age Skeleton Found (Cheddar Man - 9,000 Years Old)

    12/30/2005 5:03:20 PM PST · by blam · 83 replies · 4,773+ views
    The Japan Times, March 9, 1997Descendant of Stone Age skeleton found LONDON (Reuter) British scientists Saturday celebrated their feat of tracing a living descendant of a 9,000-year-old skeleton and establishing the world's oldest known family tree. In an astonishing piece of detective work, they matched mitochondrial DNA material extracted from the tooth cavity of Britain's oldest complete skeleton with that of a 42-year-old history teacher, Adrian Targett. The genetic material showed without doubt that Targett is a direct descendant through his mother's line of the skeleton known as Cheddar Man, which was found in 1903 in caves in Cheddar Gorge...
  • In Huge Shock, Mitochondrial DNA Can Be Inherited From Fathers

    11/26/2018 5:06:59 PM PST · by BenLurkin · 48 replies
    MtDNA exists separately from the rest of our DNA, inside the thousands of mitochondria within each cell, rather than the cell nucleus. It is so widely accepted as being from the mother's side it is sometimes known as the Eve Gene, the idea being that it can be traced back to some primeval mother of all living humans. Testing of mtDNA is used to identify maternal ancestry. However, all that will have to change after Dr Shiyu Luo of the Cincinnati Children's Hospital Medical Center published a paper in the Proceedings of the National Academy of Sciences. After testing of...
  • Polynesian mtDNA in extinct Amerindians from Brazil

    04/04/2013 11:01:14 AM PDT · by Theoria · 16 replies
    Dienekes' Anthropology blog ^ | 03 April 2013 | Dienekes' Anthropology blog
    From the paper: In 1808 the Portuguese Crown declared “Just War” (Bellumiustum) against all Indian tribes that did not accept European laws (23). The fierce Botocudo were targeted in such wars and, in consequence, became virtually extinct by the end of the 19th century (24). Their importance for the history of the peopling of the Americas was revealed by studies reporting that the Botocudo had cranial features that consistently were described as intermediate between the polar Paleoamerican and Mongoloid morphologies (25, 26). Multivariate analyses of the cranial measures of different Amerindian and Paleoamerican groups from Brazil indeed concluded that the...
  • The Earliest Group Of Modern Humans To Branch Off Survived Until Just 2,300 Years Ago

    10/03/2014 8:26:08 AM PDT · by SeekAndFind · 17 replies
    Business Insider ^ | 10/03/2014 | STEPHEN LUNTZ, IFL SCIENCE
    Oxford Journals, Genome Biology and EvolutionBurial site and skeletal remains of the St. Helena marine forager, who was at least 50 years old when he died DNA from a 2,300-year-old skeleton suggests that the earliest known group of modern humans to branch off from the wider genetic population survived until astonishingly recently. The finding supports the case that southern, rather than eastern, Africa is humanity's ancestral home.Mitochondrial DNA, passed on only from the mother, demonstrates that all humanity is descended from a single ancestor around 200,000 years ago. Archaeological evidence points to the Omo Valley, where fossil evidence suggests that Homo sapiens roamed Africa 195,000...
  • DNA reveals details of the peopling of the Americas

    09/02/2013 8:46:52 AM PDT · by SunkenCiv · 32 replies
    Science News ^ | August 12, 2013 | Tina Hesman Saey
    The scientists examined the DNA of mitochondria, tiny power plants within cells that get passed down from mother to child. Scientists use mitochondrial DNA from living populations to decipher ancient movements of their ancestors. Most studies have examined only a small part of the mitochondria's circular piece of DNA. But Antonio Torroni, a geneticist at the University of Pavia in Italy, and his coauthors compiled complete mitochondrial genomes from 41 native North Americans and combined that data with information from previous studies... supports the widely accepted notion of an initial coastal migration wave. A second wave of migration probably left...
  • Polar bears' ancient roots pushed way back

    07/25/2012 6:22:06 PM PDT · by SunkenCiv · 30 replies
    Science News ^ | Monday, July 23rd, 2012 | Devin Powell
    ...A new analysis of its DNA suggests that Ursus maritimus split from the brown bear between 4 million and 5 million years ago -- around the same time when, some scientists believe, the Arctic's thick sea ice first formed. With such old origins, the creature must have weathered extreme shifts in climate, researchers report online July 23 in the Proceedings of the National Academy of Sciences. Simulations of how the DNA changed over time suggest that polar bear populations rose and fell with the temperature. After thriving during cooler times between 800,000 and 600,000 years ago, the bears seem to...
  • Vikings were successful at invading, alright, but did they also bring.. wisdom?

    02/08/2012 9:13:50 PM PST · by WesternCulture · 39 replies · 2+ views
    http://www.beyondweird.com/high-one.html ^ | 02/09/2012 | WesternCulture
    Our offspring and culture is the most successful feature of the History of Mankind. Ancient Rome and Greece have nothing on Scandinavia of today, nor what we did some centuries after Rome came down. No, I'm not a Racist - and I furthermore am more than a true friend of Italy and Greece. But I do not believe there's a point in denying the fact that Viking Culture has played a major role in shaping the World of today. Have a look at it. Britain, North America, Scandinavia, Germany, etc. in one way or another, all were formed by the...
  • Ancient DNA Reveals Lack Of Continuity - Neolithic Hunter-Gatherers And Contemporary Scandinavians

    01/02/2012 6:33:58 AM PST · by blam · 42 replies
    Science Direct ^ | Department of Evolutionary Biology, Uppsala University, SE-11863 Uppsala, Sweden
    Ancient DNA Reveals Lack Of Continuity Between Neolithic Hunter-Gatherers And Contemporary Scandinavians September 24, 2009. Summary The driving force behind the transition from a foraging to a farming lifestyle in prehistoric Europe (Neolithization) has been debated for more than a century [1] , [2] and [3] . Of particular interest is whether population replacement or cultural exchange was responsible [3] , [4] and [5] . Scandinavia holds a unique place in this debate, for it maintained one of the last major hunter-gatherer complexes in Neolithic Europe, the Pitted Ware culture [6]. Intriguingly, these late hunter-gatherers existed in parallel to early...
  • Mating with Neanderthals Good for Human Health

    06/17/2011 2:29:08 PM PDT · by SunkenCiv · 48 replies
    Discovery News ^ | Friday, June 17, 2011 | Tim Wall
    Interbreeding between humans and Neanderthals may have given Europeans and Asians resistance to northern diseases that their African ancestors didn't have. Peter Parham, professor of microbiology and immunology at Stanford, recently presented evidence to the Royal Society in London that Europeans gained many of the genes for human leukocyte antigens (HLAs) from neanderthals. The antigens helped them adapt to diseases in the north much more quickly than would have otherwise occurred. Comparisons of the human and Neanderthal genomes were conducted by Parham to locate similarities and differences in the DNA of modern human populations and Neanderthals. Parham found that modern...
  • We are all mutants

    06/12/2011 10:39:43 AM PDT · by decimon · 28 replies
    Wellcome Trust Sanger Institute ^ | June 12, 2011 | Unknown
    First direct whole-genome measure of human mutation predicts 60 new mutations in each of usEach one of us receives approximately 60 new mutations in our genome from our parents. This striking value is reported in the first-ever direct measure of new mutations coming from mother and father in whole human genomes published today. For the first time, researchers have been able to answer the questions: how many new mutations does a child have and did most of them come from mum or dad? The researchers measured directly the numbers of mutations in two families, using whole genome sequences from the...
  • Ancient DNA reveals male diffusion through the Neolithic Mediterranean route

    06/02/2011 5:26:34 PM PDT · by SunkenCiv · 21 replies
    The Neolithic is a key period in the history of the European settlement. Although archaeological and present-day genetic data suggest several hypotheses regarding the human migration patterns at this period, validation of these hypotheses with the use of ancient genetic data has been limited. In this context, we studied DNA extracted from 53 individuals buried in a necropolis used by a French local community 5,000 y ago. The relatively good DNA preservation of the samples allowed us to obtain autosomal, Y-chromosomal, and/or mtDNA data for 29 of the 53 samples studied. From these datasets, we established close parental relationships within...
  • Absence of Mitochondrial Proteins May Prevent Age-Related Diseases, Increase Lifespan

    05/12/2011 8:45:07 AM PDT · by decimon · 28 replies
    Daily Tech ^ | May 12, 2011 | Tiffany Kaiser
    Researchers hope to control a group of mitochondrial proteins that attack and damage other functional cell parts, which leads to age-related diseases Thomas Nyström, study leader and a researcher in the Department of Cell and Molecular Biology at the University of Gothenburg, and a team of researchers, have discovered that a group of mitochondrial proteins may be responsible for age-related diseases. Scientists have theorized that the mitochondria, which are the power stations of cells, are responsible for human aging. This theory comes from the fact that mitochondria not only produce the body's energy, but also create harmful byproducts. These byproducts...
  • Solving the puzzle of Henry VIII

    03/03/2011 12:38:11 PM PST · by decimon · 67 replies
    Southern Methodist University ^ | March 3, 2011 | Unknown
    Could blood group anomaly explain Tudor king's reproductive problems and tyrannical behavior?DALLAS (SMU) – Blood group incompatibility between Henry VIII and his wives could have driven the Tudor king's reproductive woes, and a genetic condition related to his suspected blood group could also explain Henry's dramatic mid-life transformation into a physically and mentally-impaired tyrant who executed two of his wives. Research conducted by bioarchaeologist Catrina Banks Whitley while she was a graduate student at SMU (Southern Methodist University) and anthropologist Kyra Kramer shows that the numerous miscarriages suffered by Henry's wives could be explained if the king's blood carried the...
  • Genetic Study Uncovers New Path to Polynesia

    02/05/2011 4:22:23 AM PST · by SunkenCiv · 18 replies · 1+ views
    ScienceDaily ^ | Thursday, February 3, 2011 | University of Leeds
    The islands of Polynesia were first inhabited around 3,000 years ago, but where these people came from has long been a hot topic of debate amongst scientists. The most commonly accepted view, based on archaeological and linguistic evidence as well as genetic studies, is that Pacific islanders were the latter part of a migration south and eastwards from Taiwan which began around 4,000 years ago. But the Leeds research -- published February 3 in The American Journal of Human Genetics -- has found that the link to Taiwan does not stand up to scrutiny. In fact, the DNA of current...
  • Breakthrough as DNA identifies WW1 soldier

    09/15/2007 8:33:55 PM PDT · by DancesWithCats · 28 replies · 757+ views
    London Daily Telegraph ^ | Sept 16, 2007 | DancesWithCats
    By Jasper Copping Last Updated: 1:29am BST 16/09/2007 He was a young man, like so many others, who fell on the battlefield at Passchendaele. Aged just 29, Private Jack Hunter died in the arms of his younger brother, Jim, who buried him there, on the front line, in a shallow grave. Jack Hunter, who died at Passchendaele, with his brother Jim Jack Hunter, who died in the first world war, with his brother Jim Once the guns had fallen silent, Jim returned to look for his brother's body, but the ground had been chewed up by artillery and he could...
  • Population expansion in the N African Late Pleistocene signalled by mitochondrial DNA haplogroup U6

    12/24/2010 7:06:25 AM PST · by SunkenCiv · 34 replies · 1+ views
    7thSpace Interactive ^ | December 21, 2010 | Luisa Pereira et al
    The archaeology of North Africa remains enigmatic, with questions of population continuity versus discontinuity taking centre-stage. Debates have focused on population transitions between the bearers of the Middle Palaeolithic Aterian industry and the later Upper Palaeolithic populations of the Maghreb, as well as between the late Pleistocene and Holocene. Results: Improved resolution of the mitochondrial DNA (mtDNA) haplogroup U6 phylogeny, by the screening of 39 new complete sequences, has enabled us to infer a signal of moderate population expansion using Bayesian coalescent methods. To ascertain the time for this expansion, we applied both a mutation rate accounting for purifying selection...