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Geneticists from the University of Leicester have discovered that millions of modern Asian men are descended from 11 powerful dynastic leaders who lived up to 4,000 years ago - including Mongolian warlord Genghis Khan.
The study, which is funded by the Wellcome Trust and published in the journal European Journal of Human Genetics, examined the male-specific Y chromosome, which is passed from father to son, in more than 5,000 Asian men belonging to 127 populations.
Most Y-chromosome types are very rare, but the team discovered 11 types that were relatively common across the sample and studied their distributions and histories.
Two common male lineages have been discovered before, and have been ascribed to one well-known historical figure, Genghis Khan, and another less-known one, Giocangga. The Leicester team found genetic links via a chain of male ancestors to both Genghis Khan and Giocangga, in addition to nine other dynastic leaders who originated from throughout Asia and date back to between 2100 BC and 700 AD.
http://phys.org/news/2015-03-millions-modern-men-descendants-asian.html
[Abstract]: http://www.nature.com/ejhg/journal/vaop/ncurrent/full/ejhg2014285a.html
(Score: 5, Informative) by The Archon V2.0 on Wednesday March 11 2015, @09:02PM
If you're going that literalist it's more like 4000 after the Flood being all Noah needed.
(Score: 2) by bob_super on Wednesday March 11 2015, @09:15PM
Very good point. I'm sorry in out of Mod points.
Also, the population growth wasn't that high in the years when Jesus was rampaging on his T-Rex. Them dinos darn eat a lot!
(Score: 3, Interesting) by GungnirSniper on Wednesday March 11 2015, @09:45PM
6000 years is the time frame in Sid Meyer's Civilization series so that's a subtle geek reference.
If we did start with two people back 6000 or 4000 years, how long would it have taken to get to 7 billion?
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(Score: 3, Insightful) by looorg on Wednesday March 11 2015, @10:03PM
Wouldn't a more appropriate question be how inbreed and retarded they would be if they all started out from only 2 people.
(Score: 5, Funny) by jimshatt on Wednesday March 11 2015, @10:28PM
(Score: 4, Insightful) by fritsd on Thursday March 12 2015, @12:15AM
6000 years is the time frame in Sid Meyer's Civilization series so that's a subtle geek reference.
If we did start with two people back 6000 or 4000 years, how long would it have taken to get to 7 billion?
If you know about exponentials then the answer won't surprise you.
Well, 7 billion is 2 * 4294967296, give or take a bit, so log(7 billion) / log(2) is about 33: (1 + 32)/1.
33 doublings.
If we assume for simplicity that each generation only reproduces amongst themselves in a short timespan, and each pair of parents (*) has 2 boys and 2 girls who like each other a bit too much, and in-breeding has no negative effects, then 33 doublings == 33 generations.
33 generations is not even a millennium. If people would marry at age 25 then you could fit 40 generations in a millennium, 33 in 825 years.
I remember being taught in school that there were 4 billion people on our world. Now it's 7. When my grandmother was born, it was about 1.7 billion, looking at the graph (it must have slowed down because of the Spanish Flu, WW I and WW II).
(*) obviously this calculation model doesn't take into account polygamy or Genghis Khan
(Score: 0) by Anonymous Coward on Thursday March 12 2015, @02:38AM
If people would marry at age 25
What does marriage have to do with reproduction? It's just a title.
(Score: 3, Informative) by The Archon V2.0 on Thursday March 12 2015, @02:22PM
> 6000 years is the time frame in Sid Meyer's Civilization series so that's a subtle geek reference.
I never knew Shakespeare played Civ. (Google "as you like it six thousand", sans quotes.)
6,000 years is one of the favorite numbers that creationists (excepting the modern offshoot "Old Earth" creationists) bandy about, though some of them prefer 10,000. I gather they arrived at it by adding up the ages of one of the back-to-Adam lineages in the Old Testament.