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Thread: Genetic Genealogy and Ancient DNA in the News

  1. #21
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    Quote Originally Posted by tuuli View Post
    Yes and thanks.

    Are they all Indians same tribe and what about their genes?

    tuuli
    They seem to have similar sets of genes, but there are differences. deCODEme, for example, used to use reference populations of Pima, Maya, Columbian, Karitiana and Surui. For whatever reason, in their system I (traditionally near 95-100% European by most measuring sticks) seem to be more similar to the Maya than the rest: 76.41% gene sample similarity versus 73.95% at the next highest. Of course I am more closely related to all European groups and Southwest Asians, and some East and Southeast Asians (including Cambodians, as one of the closest East Asian bunch)--but I am more closely related to Maya than Japanese, Han Chinese, and Dai (Thai)--at least according to their measuring stick. All of the other Native American groups are more distant to my sample than the other Native American groups. Of course who knows about what the most accurate measures of all of this autosomal stuff would be....
    Last edited by History-of-Things; 12-17-2012 at 05:34 AM.
    architectural historian/material culture historian
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  3. #22
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    Quote Originally Posted by History-of-Things View Post
    For whatever reason, in their system I (traditionally near 95-100% European by most measuring sticks) seem to be more similar to the Maya than the rest: 76.41% gene sample similarity versus 73.95% at the next highest.
    I think there was some speculation that this had to do with palpable Spanish admixture in the Mayan sample, making them a little more European, rather than you a little more Mayan...

    If the world ends on the 21st, though, my last words will be "Drat, deCODEme was right!"
     

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  4. #23
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    Quote Originally Posted by History-of-Things View Post
    They seem to have similar sets of genes, but there are differences. deCODEme, for example, used to use reference populations of Pima, Maya, Columbian, Karitiana and Surui. For whatever reason, in their system I (traditionally near 95-100% European by most measuring sticks) seem to be more similar to the Maya than the rest: 76.41% gene sample similarity versus 73.95% at the next highest. Of course I am more closely related to all European groups and Southwest Asians, and some East and Southeast Asians (including Cambodians, as one of the closest East Asian bunch)--but I am more closely related to Maya than Japanese, Han Chinese, and Dai (Thai)--at least according to their measuring stick. All of the other Native American groups are more distant to my sample than the other Native American groups. Of course who knows about what the most accurate measures of all of this autosomal stuff would be....

    That sounds right and some of those populations are unknown to me. For me I do find those tribes or populations facinating and worth to search more which is in common with genes compared to as Scandinavians. I find those ancient results more significant than close ones towards this present time.

    How many samples there are taken amongst those Indians or different kind of populations there? Maybe nobody knows.

    tuuli

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    DNA Extracted from Remains of Mayan "Red Queen" of Palenque
    http://www.artdaily.com/index.asp?in...9#.UPlkhD15ddg
    architectural historian/material culture historian
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    Genetic Admixture in Southern Africa
    http://www.sciencedaily.com/releases...0117133008.htm

    Inhabitants of Tianyuan Cave Near Beijing 40,000 Years Ago Likely Relatives to Many Modern Asians and Native Americans
    http://www.sciencedaily.com/releases...0121161802.htm
    architectural historian/material culture historian
    specialty: East/West interaction 17th to 19th centuries

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    Geneticists Study Ancient Tooth Bacteria and Evolution of Disease
    http://www.sciencedaily.com/releases...0217134140.htm

    Mutation That Causes Thicker Hair in East Asians Discovered
    http://www.sciencedaily.com/releases...0214133924.htm
    architectural historian/material culture historian
    specialty: East/West interaction 17th to 19th centuries

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     Cinnamon orange (01-22-2015)

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    Thread pinned.

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     ilmari (03-04-2013)

  11. #28
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    Good news. We can get DNA from remains in warm climates.

    Rabab Khairat et al., First insights into the metagenome of Egyptian mummies using next-generation sequencing, Journal of Applied Genetics, April 2013

    We applied, for the first time, next-generation sequencing (NGS) technology on Egyptian mummies. Seven NGS datasets obtained from five randomly selected Third Intermediate to Graeco-Roman Egyptian mummies (806 BC–124AD) and two unearthed pre-contact Bolivian lowland skeletons were generated and characterised. The datasets were contrasted to three recently published NGS datasets obtained from cold-climate regions, i.e. the Saqqaq, the Denisova hominid and the Alpine Iceman. Analysis was done using one million reads of each newly generated or published dataset. Blastn and megablast results were analysed using MEGAN software. Distinct NGS results were replicated by specific and sensitive polymerase chain reaction (PCR) protocols in ancient DNA dedicated laboratories. Here, we provide unambiguous identification of authentic DNA in Egyptian mummies. The NGS datasets showed variable contents of endogenous DNA harboured in tissues. Three of five mummies displayed a human DNA proportion comparable to the human read count of the Saqqaq permafrost-preserved specimen. Furthermore, a metagenomic signature unique to mummies was displayed. By applying a “bacterial fingerprint”, discrimination among mummies and other remains from warm areas outside Egypt was possible. Due to the absence of an adequate environment monitoring, a bacterial bloom was identified when analysing different biopsies from the same mummies taken after a lapse of time of 1.5 years. Plant kingdom representation in all mummy datasets was unique and could be partially associated with their use in embalming materials. Finally, NGS data showed the presence of Plasmodium falciparum and Toxoplasma gondii DNA sequences, indicating malaria and toxoplasmosis in these mummies. We demonstrate that endogenous ancient DNA can be extracted from mummies and serve as a proper template for the NGS technique, thus, opening new pathways of investigation for future genome sequencing of ancient Egyptian individuals.

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  13. #29
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    A new book in french about the grave of Spreitenbach-Moosweg (Argovie, Switzerland) of Final Neolithic. I didn't read this book but from the french abstract below, 5 men, 4 women, 2 teenagers and one baby were in the grave. The skeletons have been studied of anthropology, molecular genetics, dental morphology and isotope geochemistry that provided a variety of results: for example individuals were united by kinship. The majority of the men were of local origin, while women had moved home and gave birth to their children there.

    DOPPLER T. (éd.) Spreitenbach-Moosweg (Argovie, Suisse): une sépulture collective vers 2500 av. J.-C. / Spreitenbach-Moosweg (Aargau, Schweiz): ein Kollektivgrab um 2500 v.Chr., 2012, 336 p., 143 fig. - 112 € / 43944
    En 1997, une sépulture collective du Néolithique final a été découverte à Spreitenbach (Canton d'Argovie), constituée d'une fosse de 3.7x4.5m, dans laquelle on avait érigé une chambre funéraire en bois de 1.5x2.3m orientée NE-SW. Une superstructure plus vaste enveloppait probablement la chambre. La sépulture fut utilisée durant un maximum de 2 générations pendant la période de transition du 26e au 25e siècle av. J.-C., un fait révélé par les datations radiocarbone et le mobilier funéraire restreint. A l'intérieur, on a découvert les restes de 5 hommes, 4 femmes, 2 jeunes et d'un bébé âgé de quelques semaines, en majorité déposés sur le dos avec les jambes repliées, sans ordre particulier lié à l'âge ou au sexe. Les squelettes ont fait l'objet d'études basées sur l'anthropologie, la génétique moléculaire, la morphologie dentaire et la géochimie isotopique qui ont fourni une multitude de résultats : certains individus étaient p.ex. unis par des rapports de parenté. En majorité, les hommes étaient d'origine locale, alors que les femmes avaient emménagé chez eux et y avaient donné naissance à leurs enfants. Les parallèles montrent que durant la culture cordée, il existe à l'intérieur d'un espace même restreint une variabilité de sépultures et de rites funéraires et que les traditions régionales et les spécificités locales revêtent une importance cruciale. L'ouvrage met en évidence le potentiel de l'intégration d'analyses basées sur l'archéologie et les sciences naturelles : le dévoilement de facettes de la vie d'antan qui jusqu'à présent étaient cachées.

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     Jean M (05-13-2013)

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    From this link in german, it was mitochondrial DNA: http://m.schweizamsonntag.ch/news.ht...1466&cat=baden

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