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Keyword: mtdna

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  • Genetic Adam and Eve Could Have Been Contemporaries, Scientists Say

    08/05/2013 8:55:32 AM PDT · by marshmallow · 86 replies
    The Christian Science Monitier ^ | 8/2/13 | Elizabeth Barber
    New research published in Science shows that our most recent common female and male ancestors could have been alive at the same time.Thousands of years ago, somewhere in Africa, lived a man who – probably – had no idea that he, among all the other men in his group, would go on to become humankind’s most recent common male ancestor. Scientists would call him “Adam.” Now, a new paper published in the journal Science significantly narrows the time during which Adam could have lived – about 120,000 to 156,000 years ago – putting him in about the same time period...
  • Genetic Adam and Eve did not live too far apart in time

    08/16/2013 11:27:01 AM PDT · by SeekAndFind · 16 replies
    NATURE ^ | 08/13/2013 | Ewen Callaway
    The Book of Genesis puts Adam and Eve together in the Garden of Eden, but geneticists’ version of the duo — the ancestors to whom the Y chromosomes and mitochondrial DNA of today’s humans can be traced — were thought to have lived tens of thousands of years apart. Now, two major studies of modern humans’ Y chromosomes suggest that ‘Y-chromosome Adam’ and ‘mitochondrial Eve’ may have lived around the same time after all. When the overall population size does not change (as is likely to have happened for long periods of human history), men have, on average, just one...
  • Human ancestors interbred with related species

    09/08/2011 5:17:24 PM PDT · by Renfield · 70 replies · 2+ views
    Naturenews ^ | 09-05-2011 | Matt Kaplan
    Our ancestors bred with other species in the Homo genus, according to a study published today in the Proceedings of the National Academy of Sciences1. The authors say that up to 2% of the genomes of some modern African populations may originally come from a closely related species. Palaeontologists have long wondered whether modern humans came from a single, genetically isolated population of hominins or whether we are a genetic mix of various hominin species. Last year, an analysis comparing the Neanderthal genome sequence to that of modern H. sapiens showed that some interbreeding did take place between the two...
  • All humans are descended from just TWO people and a catastrophic event almost wiped out ALL species

    11/28/2018 9:53:49 AM PST · by SeekAndFind · 70 replies
    Daily Mail ^ | 11/27/2018 | Leigh McManus
    All humans are descended from just TWO people and a catastrophic event almost wiped out ALL species 100,000 years ago, scientists claim Genetic 'bar codes' of five million animals from different species were surveyedThe research deduced that humans and animals sprang from single pair This happened after a catastrophic event a long time after the last ice age All modern humans descended from a solitary pair who lived 100,000 to 200,000 years ago, scientists say.Scientists surveyed the genetic 'bar codes' of five million animals - including humans - from 100,000 different species and deduced that we sprang from a...
  • All humans are descended from just TWO people (truncated)

    11/24/2018 6:04:27 PM PST · by ealgeone · 82 replies
    The Daily Mail ^ | 11-24-2018 | Leigh Mcmanus
    All modern humans descended from a solitary pair who lived 100,000 to 200,000 years ago, scientists say. Scientists surveyed the genetic 'bar codes' of five million animals - including humans - from 100,000 different species and deduced that we sprang from a single pair of adults after a catastrophic event almost wiped out the human race. These bar codes, or snippets of DNA that reside outside the nuclei of living cells, suggest that it's not just people who came from a single pair of beings, but nine out of every 10 animal species, too
  • 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...
  • 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...
  • A Prolific Genghis Khan, It Seems, Helped People the World

    02/13/2003 1:47:34 PM PST · by vannrox · 17 replies · 871+ views
    NY Times ^ | February 11, 2003 | By NICHOLAS WADE
    February 11, 2003 A Prolific Genghis Khan, It Seems, Helped People the WorldBy NICHOLAS WADE remarkable living legacy of the Mongol empire has been discovered by geneticists in a survey of human populations from the Caucasus to China. They find that as many as 8 percent of the men dwelling in the confines of the former Mongol empire bear Y chromosomes that seem characteristic of the Mongol ruling house. If so, some 16 million men, or half a percent of the world's male population, can probably claim descent from Genghis Khan. The finding seems to be the first proof, on...
  • Ancient Greenland was actually green!

    07/05/2007 2:54:18 PM PDT · by Ancient Drive · 51 replies · 1,582+ views
    MSNBC ^ | 7-05-07 | By Ker Than
    The oldest ever recovered DNA samples have been collected from under more than a mile of Greenland ice, and their analysis suggests the island was much warmer during the last Ice Age than previously thought. The DNA is proof that sometime between 450,000 and 800,000 years ago, much of Greenland was especially green and covered in a boreal forest that was home to alder, spruce and pine trees, as well as insects such as butterflies and beetles.
  • Fossil DNA Proves Greenland Once Had Lush Forests; Ice Sheet Is Surprisingly Stable

    07/05/2007 5:14:09 PM PDT · by blam · 33 replies · 983+ views
    Science Daily ^ | 7-5-2007 | University Of Copenhagen
    Source: University of Copenhagen Date: July 5, 2007 Fossil DNA Proves Greenland Once Had Lush Forests; Ice Sheet Is Surprisingly Stable Science Daily — Ancient Greenland was green. New Danish research has shown that it was covered in conifer forest and, like southern Sweden today, had a relatively mild climate. Eske Willerslev, a professor at Copenhagen University, has analysed the world's oldest DNA, preserved under the kilometre-thick icecap. The DNA is likely close to half a million years old, and the research is painting a picture which is overturning all previous assumptions about biological life and the climate in Greenland....
  • Massive Genetic Study Reveals 90 Percent Of Earth’s Animals Appeared At The Same Time

    06/10/2018 2:20:23 AM PDT · by GonzoII · 232 replies
    Tech Times ^ | 30 May 2018, | Nicole Arce
    Landmark new research that involves analyzing millions of DNA barcodes has debunked much about what we know today about the evolution of species. In a massive genetic study, senior research associate at the Program for the Human Environment at Rockefeller University Mark Stoeckle and University of Basel geneticist David Thaler discovered that virtually 90 percent of all animals on Earth appeared at right around the same time. More specifically, they found out that 9 out of 10 animal species on the planet came to being at the same time as humans did some 100,000 to 200,000 years ago. "This conclusion...
  • Indiana Legend Says Welsh Settlers Arrived in the 12th Century

    05/01/2018 12:23:08 AM PDT · by SunkenCiv · 67 replies
    Los Angeles Times ^ | September 3, 1989 | Jodi Perras
    On a rugged bluff overlooking the Ohio River, known locally as "Devil's Backbone," centuries of overgrowth obscures a secret of history... In 1799, early settlers found six skeletons clad in breastplates bearing a Welsh coat of arms. Indian legends told of "yellow-haired giants" who settled in Kentucky, southern Indiana, southern Ohio and Tennessee -- a region they called "the Dark and Forbidden Land." Archeologists debunk the legend. They say that evidence indicates that the natives of the region once conducted a vigorous trading network nearby and buried their dead on the bluff... Upstream about 14 miles from Louisville, Ky., the...
  • Ancient DNA reveals Europe's dynamic genetic history

    04/23/2013 5:49:47 PM PDT · by BenLurkin · 72 replies
    phys.org ^ | 6 hours ago
    Ancient DNA recovered from a series of skeletons in central Germany up to 7500 years old has been used to reconstruct the first detailed genetic history of modern Europe. The study, published today in Nature Communications, reveals a dramatic series of events including major migrations from both Western Europe and Eurasia, and signs of an unexplained genetic turnover about 4000-5000 years ago. The research was performed at the University of Adelaide's Australian Centre for Ancient DNA (ACAD). Researchers used DNA extracted from bone and teeth samples from prehistoric human skeletons to sequence a group of maternal genetic lineages that are...
  • European origins laid bare by DNA

    10/11/2013 7:26:37 AM PDT · by BenLurkin · 31 replies
    BBC ^ | 10 October 2013 Last updated at 18:23 ET
    "None of the dynamic changes we observed could have been inferred from modern-day genetic data alone, highlighting the potential power of combining ancient DNA studies with archaeology to reconstruct human evolutionary history."
  • Ancient Skeletons Reveal Genetic History Of Central Europe

    10/12/2013 5:23:02 PM PDT · by Dysart · 15 replies
    In genetics, it’s not just the living who advance the field: DNA preserved in the brittle bones of our ancestors can provide significant insight into our genetic history. Such is the case with a new genetic history of Europe, traced by an international team of researchers and published today in Science. By creating a seamless genetic map from 7,500 to 3,500 years ago in one geographic region, scientists discovered that the genetic diversity of modern day Europe can’t be explained by a single migration, as previously thought, but by multiple migrations coming from a range of areas in modern day...
  • OU anthropologists reconstruct mitogenomes from prehistoric dental calculus

    04/17/2016 2:17:48 AM PDT · by SunkenCiv · 20 replies
    EurekAlert ^ | March 28, 2016 | U of Oklahoma
    ...In recent years, dental calculus has emerged as an unexpected, but valuable, long-term reservoir of ancient DNA from dietary and microbial sources... Very little dental calculus was required for analysis--fewer than 25 milligrams per individual. This makes it possible to obtain high quality genetic ancestry information from very little starting material, an important consideration for archaeological remains... Although dental calculus preserves alongside skeletal remains, it is not actually a human tissue. Dental calculus, also known as tartar, is a calcified form of dental plaque that acquires human DNA and proteins passively, primarily through the saliva and other host secretions. Once...
  • 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...
  • DNA evidence uncovers major upheaval in Europe near end of last Ice Age

    02/08/2016 11:24:59 PM PST · by SunkenCiv · 37 replies
    Phys dot org ^ | February 4, 2016 | Current Biology, Cell Press
    DNA evidence lifted from the ancient bones and teeth of people who lived in Europe from the Late Pleistocene to the early Holocene -- spanning almost 30,000 years of European prehistory -- has offered some surprises, according to researchers who report their findings in the Cell Press journal Current Biology on Feb. 4, 2016. Perhaps most notably, the evidence shows a major shift in the population around 14,500 years ago, during a period of severe climatic instability... The researchers pieced this missing history together by reconstructing the mitochondrial genomes of 35 hunter-gatherer individuals who lived in Italy, Germany, Belgium, France,...
  • Hitler had son with French teen

    02/17/2012 12:13:28 PM PST · by bkopto · 74 replies · 1+ views
    The Telegraph ^ | Feb 17, 2012 | Peter Allen
    Jean-Marie Loret, who died in 1985 aged 67, never met his father, but went on to fight Nazi forces during the Second World War. His extraordinary story has now been backed up by a range of compelling evidence, both in France and in Germany, which is published in the latest edition of Paris's Le Point magazine. Hitler is said to have had an affair with Mr Loret's mother, Charlotte Lobjoie, 16, as he took a break from the trenches in June 1917. Although he was fighting the French near Seboncourt, in the northern Picardy region, Hitler made his way to...
  • Did Hitler Have a Secret Son? Evidence Supports Alleged Son’s Claims

    02/21/2012 8:32:58 PM PST · by lbryce · 20 replies · 1+ views
    ABC News ^ | February 21, 2012 | Candace Smith
    Until his death in 1985, Jean-Marie Loret believed that he was the only son of Adolf Hitler. There is now renewed attention to evidence from France and Germany that apparently lends some credence to his claim. Loret collected information from two studies; one conducted by the University of Heidelberg in 1981 and another conducted by a handwriting analyst that showed Loret’s blood type and handwriting, respectively, were similar to the Nazi Germany dictator who died childless in 1945 at age 56. The evidence is inconclusive but Loret’s story itself was riveting enough to warrant some investigation. The French newspaper Le...