Researchers retrieve authentic Viking DNA from 1,000-year-old skeletons
Although “Viking” literally means “pirate,” recent research has indicated that the Vikings were also traders to the fishmongers of Europe. Stereotypically, these Norsemen are usually pictured wearing a horned helmet but in a new study published in the journal PLoS ONE this week, Jørgen Dissing and colleagues from the University of Copenhagen, investigated what went under the helmet; the scientists were able to extract authentic DNA from ancient Viking skeletons, avoiding many of the problems of contamination faced by past researchers. Analysis of DNA from the remains of ancient humans provides valuable insights into such important questions as the origin of genetic diseases, migration patterns of our forefathers and tribal and family patterns.
Unfortunately, severe problems connected with the retrieval and analysis of DNA from ancient organisms (like the scarcity of intact molecules) are further aggravated in the case of ancient humans. This is because of the great risk of contamination with abundant DNA from modern humans. Humans, then, are involved at all steps, from excavation to laboratory analyses. This means that many previous results have subsequently been disputed as attributed to the presence of contaminant DNA, and some researchers even claim that it is impossible to obtain reliable results with ancient human DNA.
Using freshly sampled material from ten Viking skeletons from around AD 1,000, from a non-Christian burial site on the Danish island of Funen, Dissing and colleagues showed that it is indeed possible to retrieve authentic DNA from ancient humans.
Wearing protective suits, the researchers removed the teeth from the jaw at the moment the skeletons were unearthed when they had been untouched for 1,000 years. The subsequent laboratory procedures were also carefully controlled in order to avoid contamination.
Analysis of the Viking DNA showed no evidence of contamination with extraneous DNA, and typing of the endogenous DNA gave reproducible results and showed that these individuals were just as diverse as contemporary humans. A reliable retrieval of authentic DNA opens the way for a valuable use of prehistoric human remains to illuminate the genetic history of past and extant populations.
Source: Public Library of Science
- Scientists retrieve authentic Viking DNA from 1,000-year-old skeletonsfrom Science CentricWed, 28 May 2008, 6:42:13 EDT
- Researchers retrieve authentic Viking DNA from 1,000-year-old skeletonsfrom PhysorgWed, 28 May 2008, 5:56:17 EDT
- Authentic Viking DNA Retrieved From 1,000-year-old Skeletonsfrom Science DailyTue, 27 May 2008, 22:35:07 EDT
Latest Science NewsletterGet the latest and most popular science news articles of the week in your Inbox! It's free!
Check out our next project, Biology.Net
From other science news sites
Popular science news articles
- Graphene microphone outperforms traditional nickel and offers ultrasonic reach
- NASA sees Tropical Cyclone Tuni becomes extra-tropical
- Latest major Eastern Pacific hurricane on record headed for landfall in Western Mexico
- NASA sees Tropical Storm Sandra being shredded by wind shear
- New study reveals what's behind a tarantula's blue hue
- Advanced new camera can measure greenhouse gases
- Massive 'development corridors' in Africa could spell environmental disaster
- Scientists get first glimpse of black hole eating star, ejecting high-speed flare
- Progesterone supplements do not improve outcomes for recurrent miscarriages
- Stem cell study paves the way for patient therapies
- Study reveals the architecture of the molecular machine that copies DNA
- Quiet 'epidemic' has killed half a million middle-aged white Americans
- Uncovering the secrets of ice that burns
- Diamonds may not be so rare as once thought
- Sleep interruptions worse for mood than overall reduced amount of sleep, study finds