deCODE You

We have just made some updates to the deCODEme ancestry service. Now you have more power and flexibility when you compare your genome with that of friends or individuals from different populations around the world.

Your genome can be viewed as a mosaic or tapestry made up of fragments of chromosomes from your ancestors. Fragments of chromosomes inherited from very recent ancestors, say grandparents, are expected to be large – typically tens of millions of nucleotides in size. As ancestors become more ancient, then the size of the chromosome fragments inherited from them become smaller – down to a few thousand or hundred nucleotides for ancestors born thousands of years ago.

Our new and improved genome comparison tool enables to you compare your genome with another individual in order to determine which chromosome fragments you share and to see how much of your genome is shared. The fascinating thing about this analysis is that each shared fragment represents a common ancestor. The number of shared fragments and their size reflects the number of common ancestors and how far back in time they are found. In other words, you can see how closely you are related.

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We at deCODEme just wanted to let you know that we have added a Forum where you can discuss genetics, ancestry and health. Our experts are looking forward to your questions and comments so we hope you take advantage of this new feature.

We are constantly working on making deCODEme more valuable and informative and we appreciate your continued interest.

We hope you have a pleasant and festive holiday.

The deCODEme Team

The deCODEme team has been busy working to update and improve your deCODEme experience.  Additions include ABO blood types, Kidney stones, Eye color and Statin-induced myopathy. We have also added  a section for feedback and research and a more detailed Male line analysis.

Here is a summary of the additions and changes:

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The Map of Kinship can be used not only to learn about your relationship to people from the different continents, but also your relationship to populations within the continents.

From a genetic point of view we are all unique, but some individuals are more similar than others. Generally speaking, genetic differences reflect geography. People from the same geographic area tend to be more genetically similar than people from distant parts of the world. This means that the greater your genetic similarity is to a particular population, the more likely you have ancestors that belonged to that group in the past and relatives in the present.

The deCODEme team has recently implemented a new tool, called the Map of Kinship. This tool can be used to explore a person’s ancestry and genealogical relationship to more than 1000 individuals from 53 populations from all over the world.

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Iceland was mainly settled by Scandinavian men and women from Irealand and Scotland

In a paper published today scientists at deCODE genetics present the results of the largest study of ancient DNA from a single population ever undertaken. Analyzing mitochondrial DNA, which is passed from mother to offspring, from 68 skeletal remains from approximately 1000 years ago, the study provides the most detailed look to date at how a contemporary population differs from that of its ancestors. The results confirm previous deCODE work that used genetics to test the history of Iceland as recorded in the sagas.

Audio link:  Dr. Kari Stefansson interviewed on BBC WORLD. BBC

These studies demonstrated that the country seems indeed to have been settled by men from Scandinavia – the vikings – but that the majority of the original female inhabitants were from the coastal regions of Scotland and Ireland, areas that regularly suffered raids by vikings in the years around the settlement of Iceland 1100 years ago.
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