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I took the 2.5 DNA test recently to find my % of native American DNA. I have two ancestors that were Native American both were 5th greatgrandparents. My DNA tests came back saying that I was 100% European. I was wondering if anyone knew if there is another test that a person could take that would be more indepth and be able to pick up on my Native DNA? I was dissapointed when I read the results especially when I know that I have Native American ancestors. Any help would be appriciated.
Waitman,
I was reading about this test in the paper this week, not this specific test, but the kind of test that is used, the SNP test. The story said that inheriting the SNP can be random, so you may/may not show the DNA results for what ethnicity you know that you are. It further said that the advances in this field in the last few years have been so great that we all may be taking this test in a few years. The advances are being made for medicine, so that people can be genetically matched with their prescriptions.
Will they keep your information for future advances, do you know?
Techteach
Techteach, They said that they would keep it for 5 years. By then maybe they can retest it and I’ll have the results that I’m looking for. Sure didn’t help convincing family members who are undecided about our family heretage.
Waitman,
Wish you had received what you were looking for.
I just did a google check for the term “autosomal DNA profile” and the only company I found was genetree. You mentioned 5th great grandparents.
That got me to thinkin’ —
1/8th is equivalent to 0.125 or 12.5 %. With 10 percent margin for error one might expect results between 22.5 and 02.5 percent results
1/16th is 0.0625 or 6.25 %. With 10 percent margin for error yuo should expect their results to be between 16.25 % and 0.00 %.
3/32 is 0.9375 or 9.375 %. Likewise with 10 % margin for error, one would expect results between 19.375 % and 0.00 %.
If there is a 10% margin for error it might not make any sense to take the test unless one believes one is at least 1/8th or greater American Indian blood. That is equivalent to having one great grandparent being fullblood, and the other 7 being non-Indian.
Techteach, what does SNP stand for?
vance
Vance,
Here’s an explanation : ” SNPs are single base pair differences in genetic sequences between genes in different humans. Genetic codes consist of chains of bases represented by the letters G, A, T and C, paired in particular patterns in the double helix of our DNA. A SNP is a change in one of these letters that exists in some but not all humans. SNPs are particularly important for mapping and discovering genes associated with common diseases, which are caused or influenced by complex interactions among multiple genes as well as environmental factors. Earlier this year, 10 large pharmaceutical companies and a foundation formed a non-profit consortium to identify 300,000 SNPs during the next two years. SNPs are believed to be the keys to designing “personalized” drugs matched to an individual’s genetic makeup.”
This is found at : http://mediswww.meds.cwru.edu/public_affairs/medlines/sept-99/3.htm
It discusses the use of SNPs to prescribe personalized medecines, so there is less than reaction to drugs.
Techteach
Thank you Vance. I may do another test later maybe a Y- chromosone test to see what it would say about my fathers line. I really don’t know if it would be worth taking because I know that they come from Wales. If the research is correct. Tracing my mother’s line might not be worth taking because I have followed the female line back from Waid, Whitman, Holly, Perkins, Hull, Keister, Dyer, which ends up in Germany. But you never know where the female line well branch off to. Anyway DNA is interesting and I plan on keeping it in mind for later on. I did find a couple of names that were way back they were Heid and Klien. I looked up the origin of these names and it said they were German and Jewish names. who knows I may be descended from Abraham.
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