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Thread: Genetic Genealogy and Ancient DNA in the News

  1. #1571
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    http://www.nature.com/nrg/journal/va...g.2017.65.html

    Harnessing ancient genomes to study the history of human adaptation

    Stephanie Marciniak & George H. Perry

    Nature Reviews Genetics (2017)
    doi:10.1038/nrg.2017.65

    Published online 11 September 2017

    Abstract

    The past several years have witnessed an explosion of successful ancient human genome-sequencing projects, with genomic-scale ancient DNA data sets now available for more than 1,100 ancient human and archaic hominin (for example, Neandertal) individuals. Recent 'evolution in action' analyses have started using these data sets to identify and track the spatiotemporal trajectories of genetic variants associated with human adaptations to novel and changing environments, agricultural lifestyles, and introduced or co-evolving pathogens. Together with evidence of adaptive introgression of genetic variants from archaic hominins to humans and emerging ancient genome data sets for domesticated animals and plants, these studies provide novel insights into human evolution and the evolutionary consequences of human behaviour that go well beyond those that can be obtained from modern genomic data or the fossil and archaeological records alone.

    Review paper.

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    The ancient cline of haplogroup K implies that the Neolithic transition in Europe was mainly demic
    https://www.nature.com/articles/s41598-017-11629-8
    Abstract
    Using a database with the mitochondrial DNA (mtDNA) of 513 Neolithic individuals, we quantify the space-time variation of the frequency of haplogroup K, previously proposed as a relevant Neolithic marker. We compare these data to simulations, based on a mathematical model in which a Neolithic population spreads from Syria to Anatolia and Europe, possibly interbreeding with Mesolithic individuals (who lack haplogroup K) and/or teaching farming to them. Both the data and the simulations show that the percentage of haplogroup K (%K) decreases with increasing distance from Syria and that, in each region, the %K tends to decrease with increasing time after the arrival of farming. Both the model and the data display a local minimum of the genetic cline, and for the same Neolithic regional culture (Sweden). Comparing the observed ancient cline of haplogroup K to the simulation results reveals that about 98% of farmers were not involved in interbreeding neither acculturation (cultural diffusion). Therefore, cultural diffusion involved only a tiny fraction (about 2%) of farmers and, in this sense, the most relevant process in the spread of the Neolithic in Europe was demic diffusion (i.e., the dispersal of farmers), as opposed to cultural diffusion (i.e., the incorporation of hunter-gatherers).

    Archaeological cultures and haplogroups in Supplementary Data S1-S7 (xlsx)
    Last edited by Genarh; 09-13-2017 at 04:42 PM.

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  5. #1573
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    http://www.adelaidenow.com.au/techno...52a98ca166bed8
    Adelaide DNA study shows first Australians came together in today’s SA 2000 years after their arrival

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    Quote Originally Posted by parasar View Post
    Adelaide DNA study shows first Australians came together in today’s SA 2000 years after their arrival
    Aboriginal hair shows 50,000 year connection to Australia
    Date:
    March 8, 2017
    Modern Aboriginal Australians are the descendants of a single founding population that arrived in Australia 50,000 years ago, while Australia was still connected to New Guinea. Populations then spread rapidly -- within 1500-2000 years -- around the east and west coasts of Australia, meeting somewhere in South Australia.
    DNA in hair samples collected from Aboriginal people across Australia in the early to mid-1900s has revealed that populations have been continuously present in the same regions for up to 50,000 years -- soon after the peopling of Australia.
    https://www.sciencedaily.com/release...0308131131.htm

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  9. #1575
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    Comparison of two Neolithic mtDNA haplotypes from a Czech excavation site with the results of mitochondrial DNA studies on European Neolithic and Mesolithic individuals

    http://www.fsigeneticssup.com/articl...162-2/abstract

    "Abstract

    The aim of the present study was to compare the mtDNA haplotypes (haplogroups H and W) obtained from 2 young females buried within a Neolithic circular enclosure (rondel) with the results of the scientific studies on Neolithic and Mesolithic skeletal material. We collected 164 mtDNA literature sequences and data concerning the age of the specimen, location of the excavation site (Denmark, France, Germany, Hungary, Italy, Poland, Spain, and Sweden), D-loop mutations, haplogroups, sequencing primers, and methods used."

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  11. #1576
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    Quote Originally Posted by Bane View Post
    Newly discovered human-like footprints from Crete
    Fossil footprints of early human ancestor stolen from archaeological site in Kasteli, Crete
    14.09.2017
    http://www.tornosnews.gr/en/greek-ne...eli-crete.html
    A number of fossilised footprints believed to belong to a hominid ancestor of modern humans have been stolen from Kissamos archaeological site on Crete island in Greece, by a person or persons unknown, authorities revealed on Thursday. Ten of some 40 footprints on the Kasteli site have been cut away and removed from the rock, where they were found by a Polish paleontologist in 2002.

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    Quote Originally Posted by Genarh View Post
    Fossil footprints of early human ancestor stolen from archaeological site in Kasteli, Crete
    14.09.2017
    http://www.tornosnews.gr/en/greek-ne...eli-crete.html
    A number of fossilised footprints believed to belong to a hominid ancestor of modern humans have been stolen from Kissamos archaeological site on Crete island in Greece, by a person or persons unknown, authorities revealed on Thursday. Ten of some 40 footprints on the Kasteli site have been cut away and removed from the rock, where they were found by a Polish paleontologist in 2002.
    O this is very bad.

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    Quote Originally Posted by epoch View Post
    O this is very bad.


    Police Arrest 55-Year-Old Man Over Theft of 5.7 mln-Year-Old Footprints in Crete

    http://greece.greekreporter.com/2017...ints-in-crete/

    "Greek police arrested a 55-year-old man in connection with the theft of 10 fossilised footprints which were stolen earlier this week from the site where they were uncovered in Kissamos, Western Crete, authorities said.

    The suspect faces charges of violating laws on protection of cultural heritage. Authorities were able to locate all ten fossils quickly in regions of Kissamos and Thessaloniki. The objects will be sent to Chania to be examined by experts.

    Ten of some 40 footprints on the site were cut away and removed from the rock where they were found by a Polish paleontologist in 2002. The 5.7-million-year-old fossils are believed to belong to a hominid ancestor of modern humans and their discovery could upend established theories of human evolution.

    The theft was reported by a member of the public that visited the site on Tuesday and alerted local police, and was later confirmed by the Natural History Museum of Crete. The investigation of the case is continuing."

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  17. #1579
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    Quote Originally Posted by paoloferrari View Post
    Police Arrest 55-Year-Old Man Over Theft of 5.7 mln-Year-Old Footprints in Crete

    http://greece.greekreporter.com/2017...ints-in-crete/

    "Greek police arrested a 55-year-old man in connection with the theft of 10 fossilised footprints which were stolen earlier this week from the site where they were uncovered in Kissamos, Western Crete, authorities said.

    The suspect faces charges of violating laws on protection of cultural heritage. Authorities were able to locate all ten fossils quickly in regions of Kissamos and Thessaloniki. The objects will be sent to Chania to be examined by experts.

    Ten of some 40 footprints on the site were cut away and removed from the rock where they were found by a Polish paleontologist in 2002. The 5.7-million-year-old fossils are believed to belong to a hominid ancestor of modern humans and their discovery could upend established theories of human evolution.

    The theft was reported by a member of the public that visited the site on Tuesday and alerted local police, and was later confirmed by the Natural History Museum of Crete. The investigation of the case is continuing."
    Thanks. Despite the recovery of the samples it still is bad. But at least they are recovered.

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  19. #1580
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    Quote Originally Posted by paoloferrari View Post
    Police Arrest 55-Year-Old Man Over Theft of 5.7 mln-Year-Old Footprints in Crete

    http://greece.greekreporter.com/2017...ints-in-crete/

    "Greek police arrested a 55-year-old man in connection with the theft of 10 fossilised footprints which were stolen earlier this week from the site where they were uncovered in Kissamos, Western Crete, authorities said.

    The suspect faces charges of violating laws on protection of cultural heritage. Authorities were able to locate all ten fossils quickly in regions of Kissamos and Thessaloniki. The objects will be sent to Chania to be examined by experts.

    Ten of some 40 footprints on the site were cut away and removed from the rock where they were found by a Polish paleontologist in 2002. The 5.7-million-year-old fossils are believed to belong to a hominid ancestor of modern humans and their discovery could upend established theories of human evolution.

    The theft was reported by a member of the public that visited the site on Tuesday and alerted local police, and was later confirmed by the Natural History Museum of Crete. The investigation of the case is continuing."
    Some of us haven't evolved all that much in 5.7 million years! "Oog Oog like rock. Oog Oog take rock."
    Last edited by Inigo Montoya; 09-19-2017 at 09:38 PM.

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