Eupedia Forums
Site NavigationEupedia Top > Eupedia Forum & Japan Forum
Results 1 to 4 of 4

Thread: Denisovans may have mated with modern humans as recently as 15,000 years ago

  1. #1
    Advisor Achievements:
    Three FriendsVeteran25000 Experience Points
    bicicleur's Avatar
    Join Date
    27-01-13
    Location
    Zwevegem, Belgium
    Posts
    5,334
    Points
    45,963
    Level
    66
    Points: 45,963, Level: 66
    Level completed: 30%, Points required for next Level: 987
    Overall activity: 45.0%


    Country: Belgium - Flanders



    1 out of 1 members found this post helpful.

    Denisovans may have mated with modern humans as recently as 15,000 years ago

    For the new study, an international team analyzed the complete genomes of 161 people from 14 groups in Indonesia and Papua New Guinea. In the DNA of 60 people from New Guinea, population biologist Murray Cox of Massey University in Palmerston North, New Zealand, and molecular biologist Herawati Sudoyo of the Eijkman Institute for Molecular Biology in Jakarta and their colleagues found an unexpected twist. The first Denisovan DNA discovered, from the Siberian cave, comes from a single population (which geneticists have labeled D0). But “Papuans carry DNA from at least two [other] Denisovan populations, called D1 and D2,” Cox said in his talk, which was filmed in advance and played at the meeting.

    When the team members analyzed the DNA with three statistical methods, they found that the two additional sources of Denisovan DNA came from populations so distantly related that they had diverged more than 283,000 years ago. And the D2 population is most distant from the Siberian Denisovans, splitting off roughly 363,000 years ago. That makes those two populations almost as distantly related to each other as they are to Neanderthals, Cox says. “We used to think of Denisovans as a single group,” notes Cox, who suggests as an aside that the D2 group might even need a new name.

    https://www.sciencemag.org/news/2019...6FV8_B2NUj0nJM

    Is there a publication yet?

  2. #2
    Regular Member Achievements:
    Veteran5000 Experience PointsRecommendation Second Class

    Join Date
    18-08-15
    Posts
    1,386
    Points
    6,435
    Level
    23
    Points: 6,435, Level: 23
    Level completed: 77%, Points required for next Level: 115
    Overall activity: 7.0%

    Y-DNA haplogroup
    R-L2
    MtDNA haplogroup
    J1c5a

    Ethnic group
    Swiss
    Country: Switzerland



    But i wonder at this point if the archaic introgression in Oceanians is really from Denisova. Likely the hominin in question is related with Denisova, but is it Denisova itself? Meaning the Altai skulls we have. Almost 300'000 years of separation between D1 and D2 and almost 400'000 between D1"D2 with D0. It's an enough gap for evolution to create a new subspecie. Sadly we dont have genomic from Homo Floresiensis and East Asiatic Homo Erectus. We are just at the beginning of Denisovan studies.

  3. #3
    Advisor Achievements:
    VeteranThree Friends50000 Experience PointsRecommendation Second Class
    Awards:
    Posting Award
    Angela's Avatar
    Join Date
    02-01-11
    Posts
    15,307
    Points
    279,511
    Level
    100
    Points: 279,511, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.6%


    Ethnic group
    Italian
    Country: USA - New York



    0 out of 1 members found this post helpful.


    Non si fa il proprio dovere perchè qualcuno ci dica grazie, lo si fa per principio, per se stessi, per la propria dignità. Oriana Fallaci

  4. #4
    Regular Member Achievements:
    1000 Experience PointsVeteran
    ThirdTerm's Avatar
    Join Date
    22-03-16
    Posts
    91
    Points
    3,604
    Level
    17
    Points: 3,604, Level: 17
    Level completed: 39%, Points required for next Level: 246
    Overall activity: 0%


    Country: Russian Federation



    1 out of 1 members found this post helpful.


    The Stanford study by Skoglund and Jakobsson (2011) was the pioneer study on ancient Denisovan DNA. But it lacked an Aboriginal Australian sample. Otherwise, Australia in the heat map would be red. The new study also didn't sample Aboriginal Australian DNA as it primarily focused on Papua New Guinea and Indonesia, where they collected 161 samples. One of the authors, Murray Cox of Massey University in Palmerston North, New Zealand, could have traveled to Australia to collect Aboriginal Australian DNA samples. Without taking Australia into account, Denisovan DNA research cannot be complete.
    Давайте вместе снова сделаем мир великий!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •