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Descendant of Genghis Khan sequenced

  1. Dec 21, 2011 #1
    “Descendant of Genghis Khan” sequenced

    Scientists in China have used the blood of a direct descendant of Genghis Khan to sequence the genome of an ethnic Mongolian for the first time.

    The milestone sequencing was announced Dec. 18 by scientists from Inner Mongolia Agricultural University (IMAU), Inner Mongolia University for the Nationalities (IMUN) and BGI, which credits itself as "the world's largest genomics organization." The scientists said this sequencing of the Mongolian genome will help them address genetic differences and genetic diseases among the Mongolian people.


    The name of the man whose DNA was sequenced was not given, but he was identified as a 34th-generation descendant of Genghis Khan and a member of the Mongolian royal family. He is said to be a member of the Sunit Tribe that lives in the Xilingol prefecture of Inner Mongolia. The scientists said this man has a fully defined family pedigree that dates back to the 13th-century Mongolian empire and his family line shows "no background of intermarriage between other ethnic groups," according to professor Huanmin Zhou, project investigator and director of science and technology at IMAU.

    With this first genome under its belt, the team plans to expand its database with further samples to enhance research of Mongolian health.

    According to the Xinhua news agency, there are about 10 million ethnic Mongolians around the world, living in Mongolia, China and Russia.

    Inner Mongolia is an autonomous region of the People's Republic of China. It borders the country of Mongolia, which sits along Inner Mongolia's northern border. The Mongolian people are a minority in Inner Mongolia.

    Genghis Khan was one of the world's great conquerors. He founded the Mongol Empire, which continued to grow after his death in 1227, becoming history's largest contiguous empire. The empire was extended by his descendants, eventually encompassing more than 9 million square miles before it fell in 1368.

    The Great Khan, as he was sometimes known, was also one of the world's more productive breeders. A study released in 2003 revealed that 8 percent of the males living in the regions of the former Mongolian Empire carried a nearly identical Y chromosome, suggesting that they were all direct descendants of Genghis Khan and his many sons. According to the study, as many as 0.5 percent of all males on the planet today may be descendants of Genghis Khan.
     
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  3. Dec 21, 2011 #2

    Evo

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    Re: “Descendant of Genghis Khan” sequenced

    You need to provide a link to the actual paper. Please do so now.
     
  4. Dec 21, 2011 #3
  5. Dec 22, 2011 #4

    Borek

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    Re: “Descendant of Genghis Khan” sequenced

    Fairy tales. Taking into account that several percent of children are illegitimate, chances of him being a real descendant of Genghis Khan are well below 50%.
     
  6. Dec 22, 2011 #5

    Pythagorean

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    Re: “Descendant of Genghis Khan” sequenced

    Not defending the claim, but here's the original announcement:

     
  7. Dec 22, 2011 #6

    Borek

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    Re: “Descendant of Genghis Khan” sequenced

    I don't doubt he has papers for his ancestry, but papers just confirm his official status. Cheating is not covered by birth certificates.
     
  8. Dec 22, 2011 #7
    Re: “Descendant of Genghis Khan” sequenced

    Of course. Assuming there is validity in the DNA test, his papers will supersede said DNA test. :wink:

    1 in 200 men direct descendants of Genghis Khan For another "opinion."
     
  9. Dec 22, 2011 #8

    Pythagorean

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    Re: “Descendant of Genghis Khan” sequenced

    You mean to say cheating was rampant back then and the errors have since propagated (i.e. the guy could be innocently wrong) or that he himself is knowingly cheating today?
     
  10. Dec 22, 2011 #9

    Borek

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    Re: “Descendant of Genghis Khan” sequenced

    Yes, I mean he can be innocently wrong. And I don't think cheating was rampant just then, there is, was and always will be some fraction of cheaters. Todays statistics say that several percent (see http://en.wikipedia.org/wiki/Non-paternity_event#Rates_of_non-paternity and http://jech.bmj.com/content/59/9/749.long) of kids are not biological kids of their legal fathers (unknowingly to fathers). For sure this fraction changes with time and is different in different societies, but assuming 2% and 34 generations, his chances of being really a descendant of Genghis Khan are 50/50. And my understanding is that 2% is a rather conservative estimate.
     
  11. Dec 23, 2011 #10
    Re: “Descendant of Genghis Khan” sequenced

    Don't follow you.
    0% cheating mens his has 100% chance of being a direct decendant.
    100% cheating means he has a 0% chance of being a descendant.
    2% cheating translates into 50/50 chance after 34 generations < -- this I don't quite comprehend.

    A generational stable rate of 2% cheating mothers out of 34 would mean perhaps only one woman cheated and the chance of her cheating are not all of a certainty either.
    Take into account that if in the process of cheating, the selection for a mate would most likely be someone within the Khan clan than outside, at least for the first few generations, than the chance of that offspring not having a Khan Y chromosome, if male, drops from 2%.

    The scientists would have relied surely not solely his birth heritage being presented to them with just a piece of paper as evidence, but would have had to have carried out some sort of statistical analysyis to warrant publishing.. That paper would support the claim that he has more of a probablility of being a direct descedant than an individual picked at random from the general population.
     
  12. Dec 23, 2011 #11

    Borek

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    Re: “Descendant of Genghis Khan” sequenced

    Probability he is who he thinks he is is 0.9834=0.50.
     
  13. Dec 23, 2011 #12
    Re: “Descendant of Genghis Khan” sequenced

    That is what I don't get if the "study" is so flawed than why did they even go through the motions. There must be some other credible valuable evidence in suppost - could be that he a a marked resemblance to Khan the Great. :)
     
  14. Dec 24, 2011 #13
    Re: “Descendant of Genghis Khan” sequenced

    There's actually a study that suggest that 10% of the people in the world their fathers aren't who they think they are....
     
  15. Dec 24, 2011 #14

    Pythagorean

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    Re: “Descendant of Genghis Khan” sequenced

    one study probably isn't enough. I'm sure there's all sorts of demographics associated, but that would drop it to a 2.78% chance!
     
  16. Dec 24, 2011 #15

    Borek

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    Re: “Descendant of Genghis Khan” sequenced

    Have you read further posts you would see a link to the study that suggests 10% (on average) is an overestimate.
     
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