Maggie’s Motivational Pic Thread v2.0 - - New Rules - See Post #1

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Gene Expression

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1 in 200 men direct descendants of Genghis Khan
By Razib Khan | August 5, 2010 12:38 am
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473px-YuanEmperorAlbumGenghisPortrait
In 2003 a groundbreaking historical genetics paper reported results which indicated that a substantial proportion of men in the world are direct line descendants of Genghis Khan. By direct line, I mean that they carry Y chromosomes which seem to have come down from an individual who lived approximately 1,000 years ago. As Y chromosomes are only passed from father to son, that would mean that the Y is a record of one’s patrilineage. Genghis Khan died ~750 years ago, so assuming 25 years per generation, you get about 30 men between the present and that period. In more quantitative terms, ~10% of the men who reside within the borders of the Mongol Empire as it was at the death of Genghis Khan may carry his Y chromosome, and so ~0.5% of men in the world, about 16 million individuals alive today, do so. Since 2003 there have been other cases of “super-Y” lineages. For example the Manchu lineage and the Uí Néill lineage. The existence of these Y chromosomal lineages, which have burst upon the genetic landscape like explosive stars sweeping aside all other variation before them, indicates a periodic it “winner-take-all” dynamic in human genetics more reminiscent of hyper-polygynous mammals such as elephant seals. As we do not exhibit the sexual dimorphism which is the norm in such organisms, it goes to show the plasticity of outcome due to the flexibility of human cultural forms.
ResearchBlogging.orgJason Goldman of Thoughtful Animal reminded me of the 2003 paper a few days ago, so I thought it would be useful to review it again for new readers (as I know most of you have not been reading for 7 years!). To understand how one Y chromosomal lineage can have such a wide distribution across such a large proportion of the human race, here is a quote attributed to Genghis Khan:

You’re probably more familiar with the paraphrase in Conan the Barbarian.
I thought I was Spartacus....

Cheers, Sirhr
 
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Stolen car......................check
Open container...........check
Gun..................................check
Rattlesnake..................check
Powdered uranium...check

This guy is one heck of a party animal .
 
Stolen car......................check
Open container...........check
Gun..................................check
Rattlesnake..................check
Powdered uranium...check

What? How do you spend a Thursday morning?
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Im related to Ghengis Kahn

You might be too!


Gene Expression

« Daily Data Dump – WednesdayDaily Data Dump – Thursday »
1 in 200 men direct descendants of Genghis Khan
By Razib Khan | August 5, 2010 12:38 am
18.2K

473px-YuanEmperorAlbumGenghisPortrait
In 2003 a groundbreaking historical genetics paper reported results which indicated that a substantial proportion of men in the world are direct line descendants of Genghis Khan. By direct line, I mean that they carry Y chromosomes which seem to have come down from an individual who lived approximately 1,000 years ago. As Y chromosomes are only passed from father to son, that would mean that the Y is a record of one’s patrilineage. Genghis Khan died ~750 years ago, so assuming 25 years per generation, you get about 30 men between the present and that period. In more quantitative terms, ~10% of the men who reside within the borders of the Mongol Empire as it was at the death of Genghis Khan may carry his Y chromosome, and so ~0.5% of men in the world, about 16 million individuals alive today, do so. Since 2003 there have been other cases of “super-Y” lineages. For example the Manchu lineage and the Uí Néill lineage. The existence of these Y chromosomal lineages, which have burst upon the genetic landscape like explosive stars sweeping aside all other variation before them, indicates a periodic it “winner-take-all” dynamic in human genetics more reminiscent of hyper-polygynous mammals such as elephant seals. As we do not exhibit the sexual dimorphism which is the norm in such organisms, it goes to show the plasticity of outcome due to the flexibility of human cultural forms.
ResearchBlogging.orgJason Goldman of Thoughtful Animal reminded me of the 2003 paper a few days ago, so I thought it would be useful to review it again for new readers (as I know most of you have not been reading for 7 years!). To understand how one Y chromosomal lineage can have such a wide distribution across such a large proportion of the human race, here is a quote attributed to Genghis Khan:

You’re probably more familiar with the paraphrase in Conan the Barbarian.
SORRY, I CHECKED. I AM NEANDERTHAL!