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These DNA ancestry tests are not very accurate

bver_hunter

Well-known member
Nov 5, 2005
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That DNA test is very accurate to identify an individual from a crime scene as it is unique for each person. However, you need tons and tons of DNA data for each and every country round the world to then use it as an "Ancestry" ID library database to compare it to. No single DNA organization could have done that accurately enough to give it even a 90% Confidence limit to ID the country or countries that your ancestors originated from. So, as Marketplace stated, it is more like an interesting Board game rather than a very factual ancestry DNA. When even twins have a very varied ancestry DNA, then just do it for fun. Now if you committed a crime and the cops were looking for a specific DNA, then you are screwed, as it would ID you very easily.
 

bazokajoe

Well-known member
Nov 6, 2010
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Never understood why people care about their ancestry? I don't give a rats ass about mine. Born here and will never live anywhere else. Where my family is from has no influence on me.
 

Hugh G. Rekshun

The 986,209,435th Beatle
Aug 21, 2001
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T.O.
Like I said in the other thread, I wouldn't pay much attention to the ethnicity estimates, which is strangely the only thing that particular CBC article mentions while somehow completely failing to point out the principal intended use of genealogy for these DNA tests.
http://terb.cc/vbulletin/showthread...YOUR-results&p=6302164&viewfull=1#post6302164

And the ethnicity estimates they got from the same companies actually don't look hugely different from each other, probably within the limits of the percentage of the no-call SNPs.
http://thednageek.com/survey-how-accurate-is-your-dna-test/

I have yet to hear of anyone who knows what they're talking about claiming they are not useful for showing the DNA connections between people who are related, except for some very rare instances where something in the testing process got fucked up. Because the connections get increasingly random as they get more distant, there can certainly be cases that might be outside the usual expected range, where something like a second cousin might be estimated to be a third cousin, or the other way around.
 
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NotADcotor

His most imperial galactic atheistic majesty.
Mar 8, 2017
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Never understood why people care about their ancestry? I don't give a rats ass about mine. Born here and will never live anywhere else. Where my family is from has no influence on me.
I think racial and ethnic pride is silly for pretty much the same reasons. It seems that the people who are most into X pride often have done the least with their lives.

However there is nothing wrong with a bit of historical curiosity. To each their own I guess.
 

kkelso

Well-known member
Apr 27, 2003
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I think racial and ethnic pride is silly for pretty much the same reasons. It seems that the people who are most into X pride often have done the least with their lives.
An interesting observation, and difficult to argue with.

KK
 

Hugh G. Rekshun

The 986,209,435th Beatle
Aug 21, 2001
489
4
18
T.O.
Never understood why people care about their ancestry? I don't give a rats ass about mine. Born here and will never live anywhere else. Where my family is from has no influence on me.
So if you were adopted, you would have absolutely no curiosity at all about who your biological parents were, or if you might have unknown siblings or other relatives?
That's probably a significant portion of the millions of people who have done these tests.
http://genie1.com.au/blog/51-introduction-to-using-dna-for-genealogy

That article is very misleading and factually incorrect in repeatedly claiming police are getting "access to the database" or "DNA profiles" from the consumer DNA testing companies. What they get is exactly the same thing as all the other millions of people using these companies -- a list of "DNA relatives" and their degree of connection, which is exactly what they're looking for to help them identify the otherwise unknown murder suspects. They're not getting the actual DNA profiles (the A,C,G,Ts) of his relatives, and police don't want or need that information anyway as it would be almost entirely useless to them.

What FamilyTreeDNA has now done is specify that police using their service for this purpose are now required to notify the company about every case where they want to do this, as opposed to previously when the police were just doing it without notifying them and no one outside of the police had any idea they were doing it.
 
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