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mr wonder 02-02-2019 11:24 AM

Twins get 'mystifying' DNA ancestry test results
 
Twins get 'mystifying' DNA ancestry test results
https://www.youtube.com/watch?v=Isa5c1p6aC0

after twins take DNA test from 5 different companies they take 30 minutes of video (in real time) to say
-the twins get different ancestry breakdowns which makes no sense scientifically.
-even from the same company they get different ethnic results
-these DNA test are only 50% accurate... at best
-the ethnic breakdowns are based on estimates and selected groups samples and mathematical algorithms that are often updated and give different results overtime.
-some of the same people took the same test at different times and got fairly different and new "ancestry" breakdowns.
-parts of the ethnic assessments are guesses.
-the only thing that they can say for sure is what continent you're from... generally.
-people are really about 99% the same genetically.
-don't take the DNA test to seriously. (or at all if you ask me)

I'd add keep your money.
AND not mentioned in the video... on the darker side... some(?) of these companies trade and sell people's DNA information.
How many of us would willingly give up our DNA to some faceless company if they just asked for it?
just sayin'.

Caveat Emptor
Buyer Beware

saltwn 02-02-2019 04:04 PM

Re: Twins get 'mystifying' DNA ancestry test results
 
Quote:

Originally Posted by mr wonder (Post 960910)
Twins get 'mystifying' DNA ancestry test results
https://www.youtube.com/watch?v=Isa5c1p6aC0

after twins take DNA test from 5 different companies they take 30 minutes of video (in real time) to say
-the twins get different ancestry breakdowns which makes no sense scientifically.
-even from the same company they get different ethnic results
-these DNA test are only 50% accurate... at best
-the ethnic breakdowns are based on estimates and selected groups samples and mathematical algorithms that are often updated and give different results overtime.
-some of the same people took the same test at different times and got fairly different and new "ancestry" breakdowns.
-parts of the ethnic assessments are guesses.
-the only thing that they can say for sure is what continent you're from... generally.
-people are really about 99% the same genetically.
-don't take the DNA test to seriously. (or at all if you ask me)

I'd add keep your money.
AND not mentioned in the video... on the darker side... some(?) of these companies trade and sell people's DNA information.
How many of us would willingly give up our DNA to some faceless company if they just asked for it?
just sayin'.

Caveat Emptor
Buyer Beware

these commercial enterprises grew out of the (Montel, tell us who the daddy is) simple tests for paternity.
They are not "ancestry DNA" tests if you've ever read any research on the real ones.
Reason I am aware of this is I combed through some stuff when they did a study of the homeland folk on the island where my own ancestors hailed from. The island has been protected as a biosphere reserve not only for plants and animals but also humans for a long time now but originally was a stopping off point for many peoples.
Then when DNA was mapped scientists eventually did a thorough decades long study of the islanders.
One person will have multiple strains from blocks of ancestry. Then there will be that person with a few local strains and one very strong DNA bit of Semite stronger than any in Israel or Palestine or other Semite enclaves!
One strong and one weak strain of African. One only strain of Asian of any type. Nordic/Germanic is prevalent.
Many others. But each is a long time consuming mystery.
You will not get an accurate DNA study for a hundred or two hundred buck. :no
The best way-boring but better- to trace DNA is to first trace ancestry and then check if there are already professional scientific studies in existence for the area.
I have no idea if they exist for Bavaria (now non existent but where a lot of "Pennsylvania-Dutch hailed from), but that kind of study would tell you more than a quick stop DNA test.
For African Americans who know there ancestry a little there are still some slave graveyards -though not many, but more are "discovered" every day by land owners. There are ship's records etc. The thing is all people leaving Africa to be sold left from one main port. But hailed from different areas. Oral history is the most useful in this instance (yes just like ALex Hailey's family).
It's hard but interesting work. Some day DNA testing will be more perfected, but for now I repeat and emphasis your, "BUYER BEWARE!".


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