7-year-old girl takes DNA test and finds out that her father is a cuckold
10-12-2018, 03:53 AM
Quote: (10-11-2018 09:00 PM)gework Wrote:
As someone who works in this field I'll add this...
The ethnic prediction capabilities of these tests is temperamental. Given her results and her father's results it's possible that her father is her biological father.
Even if you test four siblings with these tests, the ethnic results they give can be quite different.
These tests can only generally reliably show ethnicity at the georegional level, e.g. Western Europe. If you are for example thoroughly British, you may get large chunks of Iberian, Skandi, French or German.
My Father and his sister's results are about 20% different on Ancestry. On a site with more rudimentary predictions they don't look remotely similar.
Any country or region that shows up as a low single digit percentage is likely just noise.
Regarding this girl, her control panel will show if this guy is her actual father. She didn't need to look at the ethnicity.
When test results of siblings are 20% apart, then essentially what you get is only some accuracy of major heritage regions - tighter classifications like Germany/Irish/Polish can be close to useless.
In addition for many South American mixed people it becomes even more complicated due to their diverse heritage.
The girl is predominantly of European origin with some admixture - the basic take-a-fucking-look test is about as valid as more fancy results which ultimately did not prove much.