Bara google PCA DNA samt olika landsnamn eller populationsnamn. Att tro att det ej finns skillnader mellan olika populationer är naivt. Att det finns likheter är ju givetvis sälvklart.
Kalmar i studien ska nog läsas som DNA från ben:
- från skeppet Kronan (Kalmars läns museum). Var besättningen varifrån vet jag absolut inte men den kan väl ha varit ifrån många olika platser.
- från Sandby borg (också Kalmar Läns Museum).
Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Jag saknar själv kunskap att bedöma men kända genetiker verkar ganska skeptiska till generaliseringar av populationer i Europa. Vissa delar av världen är det betydligt lättare. Ihop med strontiumanalyser kan man nog så småningom få en bra bild.
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Jag är dålig på DNA, men har hyfsad koll på populationsstudier. Också hyfsad på statistik. För mig går det inte ihop riktigt, det är för difust. Men det liknar tolkningarna av strontium, där man kastar sig in i slutsatser. Även utan att begripa hur analysen går till så förstår man att de trasslar in sig.i ganska säkra tolkningar innefattande sniglar och möss och hittar ett område som passar och glömmer de som också passar. Det är synd, om forskningen inte var så tendentiös skulle den vara bättre. Men jag tror varken genetiken eller fysiker är att klandra, det är när arkeologerna lägger vantarna på det som problemen uppstår. Igen...
-
Anders i Uppsala
- Inlägg: 776
- Blev medlem: 8 juli 2015, 20:21
- Ort: Uppsala
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Jag tänker att någon som flyttade hit som t.ex. köpman eller hantverkare kanske också fick färre barn än dem som var infödda. Jag antar att de inte var jätteunga när de invandrade och att de hade lite svårare att träffa någon att skaffa barn med jämfört med en genomsnittlig nordbo.
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Eller så vände de hem igen när de blev gamla och tog familjen med sig. Dom som dog under tiden här är dom vi ser...Anders i Uppsala skrev: ↑26 januari 2023, 23:52Jag tänker att någon som flyttade hit som t.ex. köpman eller hantverkare kanske också fick färre barn än dem som var infödda. Jag antar att de inte var jätteunga när de invandrade och att de hade lite svårare att träffa någon att skaffa barn med jämfört med en genomsnittlig nordbo.
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Ett kort nyhetsinslag från SVT där Anders Götherström berättar om de grupper som kom hit under vikingatiden så som de syns i DNA.
https://www.svt.se/nyheter/vetenskap/vi ... karnas-dnaMånga svenskar bär fortfarande gener från vågen av människor från England och Irland som flyttade till Sverige under vikingatid. Dåtida invandrare österifrån verkar däremot inte att fått så många barn visar ny studie.
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Intressant om folkvandringstida kungaätter
DNA From Barbarians' Grave Sheds Surprising Light On Mysterious Period Of History
author
TOM HALE
Senior Journalist
clock
Published
September 12, 2018
"Germanic warriors" as depicted in Philipp Clüver's Germania Antiqua (1616). Public Domain
The fourth century to eighth centuries CE was a time of earthshaking change for Europe. The Western Roman Empire had begun to crumble, and swathes of this once-great empire were being picked off by non-Roman “barbarian" tribes from the north, like the Goths, the Vandals, the Huns, and the Longobards.
However, much of the story about this period remains a bit of mystery as the barbarians, on the whole, were pretty bad at keeping records.
Now, thanks to an in-depth study of the barbarians’ DNA, as well as their ancient artifacts, researchers finally understand how some non-Roman barbarian tribes migrated around Europe and shaped its future.
The new study, published in the journal Nature Communications, sequenced the genomes of two entire cemeteries built in the sixth century, one located in Hungary, and one in northern Italy. Both cemeteries were previously associated with the Longobards, a Germanic barbarian people who ruled most of the Italian Peninsula from 568 to 774 CE.
Remarkably, their findings suggest the cemetery was a relatively multicultural place. Each cemetery was organized around a single central family group of central or northern European descent. Alongside their graves, there were individuals closer to the local area in southern Europe. The graves of the northern Europeans tended to decorated with elaborate grave goods, like swords and shields for the men and beaded necklaces and brooches for the women. Their remains also suggested that they consumed hearty protein-rich diets. The other graves contained fewer objects and appeared less well-nourished.
Elaborate grave goods from one of the graves associated with potential northern invaders. © Amorim et al. 2018. Understanding 6th-Century Barbarian Social Organization and Migration through Paleogenomics. Nature Communications.
“This appears to suggest that these particular communities contained a mix of individuals with different genetic backgrounds, that they were aware of these differences, and that it likely influenced their social identity,” Professor Patrick Geary, the Institute for Advanced Study in the US, said in a statement.
"Prior to this study, we would not have expected to observe such a strong relationship between genetic background and material culture,” they added.
All of this provides the researchers with some rare hard evidence about how the non-Roman tribes, namely the Longobards, who migrated down from northern Europe and begun to conquer lands as Rome's power began to dwindle.
“Combining ancient DNA with strontium isotopes suggests that individuals of northern ancestry were migrants while the ones with southern ancestry were locals, an observation that is consistent with the barbaric invasion into Italy,” states Cosimo Posth of the Max Planck Institute for the Science of Human History.
“Though we really need more data,” Professor Krishna Veeramah of Stony Brook University added, “our current results are consistent with the idea of barbarians migrating from north of Danube and east of the Rhine, which would suggest we are observing the invasions previously described by the Romans."
DNA From Barbarians' Grave Sheds Surprising Light On Mysterious Period Of History
author
TOM HALE
Senior Journalist
clock
Published
September 12, 2018
"Germanic warriors" as depicted in Philipp Clüver's Germania Antiqua (1616). Public Domain
The fourth century to eighth centuries CE was a time of earthshaking change for Europe. The Western Roman Empire had begun to crumble, and swathes of this once-great empire were being picked off by non-Roman “barbarian" tribes from the north, like the Goths, the Vandals, the Huns, and the Longobards.
However, much of the story about this period remains a bit of mystery as the barbarians, on the whole, were pretty bad at keeping records.
Now, thanks to an in-depth study of the barbarians’ DNA, as well as their ancient artifacts, researchers finally understand how some non-Roman barbarian tribes migrated around Europe and shaped its future.
The new study, published in the journal Nature Communications, sequenced the genomes of two entire cemeteries built in the sixth century, one located in Hungary, and one in northern Italy. Both cemeteries were previously associated with the Longobards, a Germanic barbarian people who ruled most of the Italian Peninsula from 568 to 774 CE.
Remarkably, their findings suggest the cemetery was a relatively multicultural place. Each cemetery was organized around a single central family group of central or northern European descent. Alongside their graves, there were individuals closer to the local area in southern Europe. The graves of the northern Europeans tended to decorated with elaborate grave goods, like swords and shields for the men and beaded necklaces and brooches for the women. Their remains also suggested that they consumed hearty protein-rich diets. The other graves contained fewer objects and appeared less well-nourished.
Elaborate grave goods from one of the graves associated with potential northern invaders. © Amorim et al. 2018. Understanding 6th-Century Barbarian Social Organization and Migration through Paleogenomics. Nature Communications.
“This appears to suggest that these particular communities contained a mix of individuals with different genetic backgrounds, that they were aware of these differences, and that it likely influenced their social identity,” Professor Patrick Geary, the Institute for Advanced Study in the US, said in a statement.
"Prior to this study, we would not have expected to observe such a strong relationship between genetic background and material culture,” they added.
All of this provides the researchers with some rare hard evidence about how the non-Roman tribes, namely the Longobards, who migrated down from northern Europe and begun to conquer lands as Rome's power began to dwindle.
“Combining ancient DNA with strontium isotopes suggests that individuals of northern ancestry were migrants while the ones with southern ancestry were locals, an observation that is consistent with the barbaric invasion into Italy,” states Cosimo Posth of the Max Planck Institute for the Science of Human History.
“Though we really need more data,” Professor Krishna Veeramah of Stony Brook University added, “our current results are consistent with the idea of barbarians migrating from north of Danube and east of the Rhine, which would suggest we are observing the invasions previously described by the Romans."
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Mycket intressant, tack!
Dags att läsa om Dick Harrisons avhandling som åtminstone delvis beskrev detta. Dvs langobarderna m.fl. var en allt annat än enhetlig stam.
Dags att läsa om Dick Harrisons avhandling som åtminstone delvis beskrev detta. Dvs langobarderna m.fl. var en allt annat än enhetlig stam.
Re: Den genetiska variationen i Skandinavien ökade under vikingatiden för att sedan minska igen
Har läst langobardernas historia, där står det att ledarskicktet var noga med att bara gifta in sig med medlemmar ur ursprungsstammen. Men själva folket i övrigt var ju en salig blandning av folk som följde med på vandringsfärden kan man man väl säga, väldigt intressant iallafall.