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Mom's DNA test results

Ancestry

In Mom's family, there's always been talk of "that woman," who introduced dark coloration to the family. The romantic notion is that she was a gypsy shipwrecked off the coast of New England. We decided to find out if that was really the case, so Mom spit in a tube and we sent in her DNA to be analyzed.

Swedish grandparentsTwo of Mom's grandparents came to the U.S from Sweden during their lifetimes, so it's unsurprising that Scandinavia makes up such a large chunk of her DNA markers. The actual percent Scandinavian could range from 0 to 46, so I'm going to guess that the average shown is a bit of an underestimate.

Rhode Island grandmotherThe Rhode Island wing of Mom's family can eventually be traced back to at least one ancestor who came to North America in 1630 from England...and a bunch of other ancestors with who-knows-what background. Based on Mom's DNA test results, it looks like many of these unaffiliated ancestors may have been Irish or from Western Europe (although Mom says Wales is the location most spoken of in her family).

What about "that woman"? Maybe she was from Spain, Portugal, Italy, or Greece. Or maybe it was just dark Irish coloration coming through. Unfortunately, the ancestor in question has been dead for many, many years, so there won't be any DNA test results to find out for sure.



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Very neat, to think of ages ago and changes in people's lifestyles and locations. Now I want to learn more about European history! But can you explain a bit about trace elements, and also about DNA in general? that is, how it is that some DNA is specifically Scandinavian, for ex? I guess that means that every Scandinavian person has some similar DNA, but why did it become differentiated, in the first place?y

Comment by adrianne Sun Jun 26 08:21:33 2016

Interesting DNA analysis. BBC News noted that Celts were not a distinct genetic group but more of a culture. http://www.bbc.com/news/science-environment-31905764

People seem to think that humans stayed in one place for generations and never moved around. Not true! Ancient peoples moved around a lot more than we moderns give them credit. After all, humans evolved in Africa and now we're spread out around the globe and trying to move to other planets. That's gotta be the ultimate "move" of them all. :)

Comment by Nayan Sun Jun 26 08:58:58 2016

Mom and Nayan --- I think both of you are interested in the how of the DNA test. Obviously, people do move around and intermarry, but we're more clannish than you might think. As with any type of evolution, the island effect means that groups that rarely interbreed tend to end up with different features --- for example, the straight dark hair that's common in Asia versus the blond hair of the typical person from Scandinavia.

Ancestry.com took a bunch of DNA samples (3,000) from 26 different regions to determine which markers show up in certain populations but not in others. Then they look for those markers in folks' DNA. Obviously, it's not perfect, but it's a fun start.

Comment by anna Sun Jun 26 10:20:20 2016
Fascinating!
Comment by Nita Sun Jun 26 12:31:15 2016

It's a pity that the results are so unspecific. The results basically says that your mother's recent ancestors are from somewhere in Europe.

If the test provides that information, you could look up the haplogroups she belongs to on eupedia. If you know both the Y-DNA and mtDNA haplogroups, you might get a better idea where her paternal and maternal ancestors possibly came from. For instance one map shows the distribution of haplogroups in different regions . And you can look up how prevalent y-DNA haplogroups and mtDNA haplogroups are by country.

It seems pretty much settled that if you look back far enough, our ancestors came from East-Africa. Exactly when homo sapiens spread out from Africa, in how many waves and by which route is not clear at the moment.

Comment by Roland_Smith Sun Jun 26 13:47:51 2016

First of all, I have a problem with Ancestry.com's attempt to do a DNA test. That organization is owned by the Mormon church and they're really more interested in getting as many people "baptized" sureptitiously into their "Church" than anything else. You might remember the flak a few years back about their secretly baptizing Holocaust victims. Secondly, there's really no objective way to evaluate DNA results like this. I refer you to this article by the American Society of Human Genetics regarding same: http://arstechnica.com/uncategorized/2008/11/geneticists-sound-note-of-caution-over-dna-ancestry-testing/

Now, that's not to say that paying a small fee for these types of tests can't be done for amusement purposes, but I'd take the results with a grain of salt.

Comment by Nayan Sun Jun 26 13:48:58 2016