The Vikings left a mark on the genetics of the present-day Nordics.

In an international study published Thursday in the journal Cell, scientists found that DNA from archeological remains shows exceptional immigration to Sweden during that time period.

The University of Stockholm said in a press release that it was possible to resolve the development of the gene pool to a level never realized before.

California whale watchers experience "soul-in-a-lifetime" sighting of Gray Whale.

The Viking ship Havhingsten
The Viking ship Havhingsten af Glendalough (the Sea Stallion of Glendalough), a replica of a Viking warship, sets out from the Viking Museum in Roskilde July 1, 2007.

According to the university, the analysis found a surprising increase of variation during the Viking period that indicates the flow of genes into the country was very intense.

You can read it on the Fox News app.

The women from the east Baltic region and the British and Irish isles contributed more to the pool of genes than the men from those regions.

We confirm the viking age migration with this level of resolution. It can be traced to the east Baltic region, the British-Irish Isles and southern Europe.

Not all parts of the country received the same amount of genes. Gotland and central Sweden were the main destinations for the eastern Baltic ancestry.

There was no way to know the number of women involved or if the women with British-Irish ancestries were willing to leave their homes.

The study found that British-Irish ancestry was common in the beginning of the Viking Age.

The ship Kronan
Underwater excavations of the ship Kronan

Gotland, Sweden's largest island, and central Sweden were found to have more eastern Baltic ancestry than other parts of the country.

Two million years ago, the oldest known genetics made a stunning picture of life.

Rodriguez-Varela said that the increase of eastern Baltic ancestry in these regions is consistent with historical sources attesting to contacts. There is no evidence that women were kidnapped and brought back during raids.

The group determined that modern Nordics have less non-local ancestry than their ancestors from the viking age.

The university was surprised to find that the gene pool had returned to what it looked like before the Vikings arrived.

The replica of a Viking ship, the 30-meter (100-foot) Havhingsten (Seastallion), sails into the fjord of Roskilde, after a trip to Oslo and Tonsberg in Norway Aug. 4, 2006.

There is a genetic component in central and western Europe that is rare in the north.

According to the university's release, Rodrguez-Varela said that a more recent influx of Uralic ancestry defined much of the northern genes. If it's recent, it's quite similar. We know that the Uralic ancestry was present in northern Sweden as early as the late viking period.

You can get the Fox News app.

The study was based on a number of well-known Swedish archeological sites.

Sanby borg is the second largest island in Sweden.

We were studying different archeological sites. The senior scientist on the study said that it made sense to combine them into a bigger study.

The report was contributed to by the news agency.