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Revealing close and distant relatives in ancient DNA with unprecedented precision
Phys dot org ^ | December 20, 2023 | Max Planck Society

Posted on 01/03/2024 10:24:01 AM PST by SunkenCiv

If two persons are biologically related, they share long stretches of DNA that they co-inherited from their recent common ancestor. These almost identically shared stretches of genomes are called IBD ("Identity by Descent") segments. Up to the sixth-degree relatives—such as second to third cousins would be, or a great great great great grandparent—the two relatives even share multiple IBD segments. Personal genomics companies such as 23andme or Ancestry detect those segments routinely in DNA of their customers, and use this signal to distinctively reveal biological relatives in their databases.

In a new study published in Nature Genetics, researchers from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, and Harvard University, U.S., has now developed a powerful new tool named "ancIBD" to extract these IBD segments also in genomes of humans who lived hundreds, thousands, or even tens of thousands of years in the past...

This advance unlocked completely new ways to analyze ancient DNA data...

The authors then applied their new tool to a dataset of 4,248 previously published ancient genomes from across Eurasia and the last 50,000 years and were able to identify hundreds of previously undetected pairs of relatives. In some fascinating cases, the two relatives were buried a large distance apart, which directly revealed the mobility of past people.

In one such case, the authors detected a pair of two Early Bronze Age nomads from Central Asia who lived ca. 5,000 years ago and were fifth-degree relatives who were buried ca. 1,500 kilometers apart from each other. These individuals, or their immediate ancestors, must have moved hundreds of kilometers between being born and being buried.

(Excerpt) Read more at phys.org ...


TOPICS: History; Science; Travel
KEYWORDS: 6degreesofbacon; ancientautopsies; bronzeage; dna; genealogy; godsgravesglyphs; helixmakemineadouble
When screening ancient Eurasian individuals for IBD segments, the researchers detected a pair of biological relatives whose remains were buried 1,410 kilometers apart, one in central Mongolia and one in southern Russia.
Credit: Nature Genetics (2023). DOI: 10.1038/s41588-023-01582-w
Credit: Nature Genetics (2023). DOI: 10.1038/s41588-023-01582-w

1 posted on 01/03/2024 10:24:01 AM PST by SunkenCiv
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To: StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; 2ndDivisionVet; 31R1O; ...

2 posted on 01/03/2024 10:25:05 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: SunkenCiv

There has been a whole lot of cheating going on.


3 posted on 01/03/2024 10:31:27 AM PST by alternatives?
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To: SunkenCiv

I would love to see my lineage back thousands of years


4 posted on 01/03/2024 10:32:44 AM PST by silverleaf (“Inside Every Progressive Is A Totalitarian Screaming To Get Out” —David Horowitz)
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Including this one, 272 GGG topics added since the last inquiry in September 2023.

5 posted on 01/03/2024 10:38:41 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: silverleaf

When I got my DNA done, I uploaded the raw file to an archaic DNA project to see what I was packin’. Eye-opening.


6 posted on 01/03/2024 10:39:28 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: alternatives?

Country music thanks them.


7 posted on 01/03/2024 10:39:45 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: SunkenCiv

Couldn’t you have just looked in your pants?


8 posted on 01/03/2024 10:42:36 AM PST by alternatives?
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To: SunkenCiv

Personal genomics companies such as 23andme or Ancestry detect those segments routinely, using Chinese PLA firms which store the results for “future military use”.


9 posted on 01/03/2024 10:44:43 AM PST by PIF (They came for me and mine ... now its your turn)
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To: alternatives?

I’m doin’ that right now. /rimshot


10 posted on 01/03/2024 10:48:31 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: silverleaf

“I would love to see my lineage back thousands of years”

My Dad’s family came over from Scotland. I’m sure there are some loveable, and some not so loveable, rogues along that lineage.
My Mom’s family came from Germany by way of England. Not sure what might be found there.


11 posted on 01/03/2024 11:08:29 AM PST by oldvirginian (My pronouns are Your Royal Majesty and Mr Fancy Pants.)
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To: SunkenCiv

Everybody’s related to everybody.


12 posted on 01/03/2024 12:09:43 PM PST by fruser1
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To: SunkenCiv

Thank you for your hard work, SunkenCiv. I appreciate it.


13 posted on 01/03/2024 12:23:44 PM PST by jacquej ("You cannot have a conservative government with a liberal culture." (Mark Steyn))
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To: sauropod

study


14 posted on 01/03/2024 1:11:51 PM PST by sauropod (The obedient always think of themselves as virtuous rather than cowardly.)
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To: fruser1

“ Everybody’s related to everybody”
My college biology prof stated that everybody alive on earth was at least 50th cousin.


15 posted on 01/03/2024 1:31:50 PM PST by muir_redwoods (Freedom isn't free, liberty isn't liberal and you'll never find anything Right on the Left)
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To: SunkenCiv

I did as well, but I wish it wasn’t built like a 90’s Geocities page.


16 posted on 01/03/2024 7:09:23 PM PST by miliantnutcase
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To: jacquej; miliantnutcase
My pleasure. Yes, it reads like Epstein's celebrity guest list.

17 posted on 01/04/2024 9:25:11 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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To: fruser1

We’re all part of The Main Ingredient.


18 posted on 01/04/2024 9:30:08 AM PST by SunkenCiv (Putin should skip ahead to where he kills himself in the bunker.)
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