My friend, who is a dietician, thinks that chocolate is healthy.
Great, but why does anyone care what my friend thinks? The word "dietician" doesn't make their opinion any more valid because there's zero additional data in that sentence to back up the opinion. So it's a useless opinion presented as-is in a comment with no justification.
So could you please stop posting unsubstantive comments on hacker news?
Some Genetic Tests Apparently Can’t Tell If You’re Dog Or Human https://futurism.com/home-genetics-test-dog-human
How DNA Testing Botched My Family's Heritage, and Probably Yours, Too https://gizmodo.com/how-dna-testing-botched-my-familys-herit...
I Took 9 Different Commercial DNA Tests and Got 6 Different Results https://www.livescience.com/63997-dna-ancestry-test-results-...
How Accurate Are Online DNA Tests? (Betteridge's Law of Headlines might still somewhat play into this one.) https://www.scientificamerican.com/article/how-accurate-are-...
Consumer DNA Tests Are Wrong 40 Percent of the Time https://www.geek.com/science/study-consumer-dna-tests-are-wr...
Consumer Affairs' 23 and me rating (1.5/5 stars) https://www.consumeraffairs.com/health/23andme.html
The words "Fly By Night" definitely come to mind.
Combine that with ongoing privacy murkiness, and 23andme is basically the medical version of Facebook. https://www.cnbc.com/2018/06/16/5-biggest-risks-of-sharing-d...
We do share a lot of genetic code, so checking for a specific aminoacid sequence could very unsurpisingly detect it in both
https://www.thedodo.com/animals-you-had-no-idea-were-so-clos...
The real test should be sending in your own genes twice. They might not detect exactly the same because of minor mutagenic differentiation that has taken place (or because you're a chimera!), but they should easily place you into the same family tree as yourself.