Best DNA Tests for Swedish Americans
What is the best DNA tests for Swedish Americans? A DNA test might be the missing piece you need to fill gaps in your ancestry research. By combining traditional paper trail genealogy with DNA testing you may uncover previously unknown branches of your family tree.
Three Types of DNA Tests
Before choosing a DNA test, it is essential to know the three main types of tests available:
- Autosomal DNA (atDNA)
- Y-DNA
- Mitochondrial DNA (mtDNA)
Each type of test serves a different purpose and is useful for various research goals. Below, we discuss their relevance to Swedish American genealogy
Autosomal DNA (atDNA)
Autosomal DNA testing is the most common and widely used type of DNA test, especially among those researching their Swedish American roots. It analyzes DNA inherited from both parents and is ideal for exploring ancestry within about 3 to 4 generations. It can also be helpful for tracing ancestors as far back as 5 to 7 generations, though at that range it becomes increasingly difficult to find distant cousins who share identifiable DNA segments – and thus a common ancestor – with you.
You may be fortunate if only one branch of your family emigrated from Sweden. With fewer ancestral lines to consider, it can be easier to identify family tree connections to Sweden. This is particularly valuable if you are working with a limited paper trail or incomplete family records, which is often the case for emigrant ancestors from the 19th or early 20th centuries. That said, the ease of discovering your Swedish roots depends on many more variables than just the number of branches leading back to Sweden. You may very well be lucky in other ways – such as having relatively close Swedish DNA-matches who have already done good work tracing your common ancestors.
Finding Very Distant Cousins Is Unlikely
If you are very lucky, you might find distant cousins with matching DNA from even a few more generations back than 7, but it is unlikely. The further back you go, the more distant and numerous the shared ancestors become, making it harder to pinpoint DNA connections. This is due to the way DNA is inherited, where individuals pass on approximately 50% of their DNA to their children. Additionally, there are typically few or no paper trails for ancestors that far back in time, unless your ancestor was a part of the royal family or nobility.
Y-DNA
The Y-DNA test can trace your paternal lineage (father’s father’s father’s…) over hundreds or even thousands of years. It focuses on the Y-chromosome, passed down from father to son and is therefore ideal for those looking to trace their paternal lineage over generations. Since the Y-DNA test can only be taken by males you either have to be a male to take it, or find a male to test that shares the line you would like to trace. For close matches – such as those with few or no mutations – the most recent common ancestor may be within 2–25 generations depending on which level of Y-DNA test you take.
One of the most powerful aspects of Y-DNA testing is its ability to trace surnames over generations. Do you know your emigrated Swedish ancestor’s surname on a paternal line you want to research? Y-DNA may help confirm if other people with that surname in America or Sweden are related to you. Y-DNA could therefore be a good test for Swedish Americans who want to fill a gap in their genealogy research.
Tracing Surnames May Not Be Useful
Despite what was said above, tracing surnames may be of little use to those researching Swedish Americans. It was not very common for Swedes to have fixed surnames before the end of the 1800s. Swedes’ surnames used to be based on their fathers’ first name (patronymics). The surnames therefore changed from generation to generation.
Patronymics also resulted in members within the same family having different surnames (see the family in the image above, and check another blog we have on the topic). Y-DNA is still useful, even without surname matching, since it will show you others who have tested that you share a paternal line with. With that information, you can check if they have already built a reliable family tree – or you can attempt to build their family tree yourself to find your shared ancestor.
Mitrochondial DNA (MtDNA)
(Mitochondrial DNA testing offers a unique way to trace direct maternal ancestry, as it is passed from mother to child with little change over generations. Since mothers pass it down to all their children, anyone – regardless of sex – can take the test. Because MtDNA mutates very seldom (even less seldom than Y-DNA) and only slightly over time, it is a powerful tool for exploring deep ancestral roots. Such tests can reveal maternal lineage connections stretching back thousands of years.
However, even those with a perfect MtDNA match to you may share a common ancestor with you who lived hundreds or thousands years ago. This makes mtDNA testing too broad, in most cases, to pinpoint a shared ancestor within a genealogically useful timeframe. Still, it can offer a valuable piece of the puzzle – especially when your paper trail research on a particular line aligns with the results of your mtDNA test.
Since MtDNA testing focuses exclusively on individual’s maternal line (mother’s mother’s mother’s…), you need to find a relative to test on that line or take the test yourself if it is your line.
Best DNA Testing for Swedish Americans: Which Company?
There are several companies that offer DNA testing, each with its own strengths. In an upcoming blog, I will share my thoughts on which ones could advance your Swedish American family research.
Hejdå for now 🙂
Anna
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