Has any DNA sample shown to be 100% of any race?
I’ve read of DNA samples being tested on people to check their racial ancestry. I am not too sure how they work or if there are variations of these.
All the results show people to be 80%, 90% of a certain race, such as “white”. I’ve never ever read of someone achieving 100% white (or any other race), even people from northern Europe. Strangely enough, a lot people in Europe get part “native American”. I don’t if this is some kind of mistake in the DNA studies; probably we’re not there technologically to be perfectly accurate with DNA racial tests.
Having said that, has anyone ever seen or read of a DNA result showing 100% purity in any race?
Native American DNA test can (and often does) indicate 100%. That’s not saying an individual is 100% Native American.
As “Shirley T” stated only 2 individuals (for males) and 1 individual (for females) of your linage will show up in testing.
Native American DNA is “unique”. The uniqueness of Native American DNA indicates the DNA mutations occurred during “isolation”. There was a continues mixing and gene flow between other world populations. As a result Native Americans have no MODERN DAY Asian, European or African DNA.
Native American “like” DNA is found in other world populations. The Native American “like” DNA suggests other World populations still contain Proto-Native American DNA, and/or early gene flow.
The issue that arises is the “ broad grouping” of Mt DNA haplogroups A, B, C D and X, and Y-Chromosome Q DNA.
These haplogroups are found in many populations including Native Americans. These haplogroups “ can be” viewed as Base Markers. Low level testing can identify these markers.
The current trend is that many people (in America and elsewhere) feel the need to prove they have (or are) Native American ancestors. So when certain combinations of mutations (including these) are found, the Testing Company will report a “probable percentage” of ancestry. Which can be a false report if the haplotypes are not identifyed.
Haplogroups have further divisions called haplotypes this is were the separation of the DNA markers are associated with specific populations. The Native American DNA haplotypes are: A2, B2, C1, D1, D2, D2a, D3, D4h3 and X2a. These haplotypes are further divided into sub-clades such as, C1b, C1c and C1d.
Native American haplotypes can be distinguished from Asian for example: Asian (or Beringian) branches are A2a, A2b, B4b1a2, C1a, C4a, C4b, D2b, and D4h1
Asian sub-clades – A2a, A2b, D2b (back-flow into Asia). Asian sub-clades – B4b1a2, C1a, D2b, D4h1 (divergence or sister-clades)
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A 100% Native American DNA test can be viewed like this
Haplogroup – A.
Haplotype – A2 (Native American)
Sub-clade – A2f (location eastern Canada (USA))
Geographical Classification – Ojibwa (not tribe)
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This data shows a “World Population Relationship Tree“. You will see that Native Americans are placed on a totally separate branch from all other populations. (pg 2)
2008: The Arctic Connection: Alaska to Siberia
http://www.dnatribes.com/dnatribes-digest-2008-10-25.pdf
Native American DNA Haplotypes
Schematic representation of phylogeny of human mtDNA outside of Africa.
http://www.plosone.org/article/slideshow.action?uri=info:doi/10.1371/journal.pone.0000829&imageURI=info:doi/10.1371/journal.pone.0000829.g001
In the diagrams here you can see the percentage of Native American “like” DNA found in Eurasian and Asian populations.
Old Siberia: Basic Genetic Contributions in the European and Siberian Taiga
http://www.dnatribes.com/dnatribes-digest-2009-11-30.pdf
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