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Pet DNA testing company in doghouse after identifying human as canine | Dogs | The Guardian
(www.theguardian.com)
this post was submitted on 16 Mar 2024
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Why and how exactly is 23andMe bs?
It connected me with a cousin (I think) who I hadn't talked to in literally decades and she shared some old photos of my grandparents when they were young.
This comment sounds completely out of touch. 23andMe have been around for a long time now and I remember when it was first starting up and it cost like 10k or more for their service because they hadn't yet figured out scale and more efficient ways to do things.
I remember a news segment where monozygotic (identical) twins had different results for their genealogy. Their efficacy and reproducibility should definitely be questioned.
Not to mention the problem of your DNA info being sold and used for nefarious purposes. Not just by hackers, but if the company is bought out by a different organization, they don't have to honor the terms of 23andMe or Ancestory.com regarding not selling you data.
Edit: Here's the story.
Their comment wasn't out of touch, but your faith in the mainstream DNA testing market certainly is.
The genetic testing done by 23 and me or ancestry are not accurate or reliable enough, and there’s very little to demonstrate any of the medical “insights” they claim are in fact accurate.
As for using DNA to determine ancestry mental relations get very dicey out past immediate lines- and even then, you will only share between 4-23% of any specific great grandparent’s dna.
Any specific grandparent, you inherit on average 25% of their dna- but this all depends on the genetic roll of the dice- usually between 20-30%, and when it comes to cousins; you might not actually share any DNA at all.
Because of how recombination works, you get a random mishmash from your parents.
Further, they way they figure ancestry in a larger frame is asininely stupid and ignores a simple fact that people generally don’t worry about interracial marriages nearly as much as supremacists would have you believe.
It’s most likely they didn’t even compare dna between you and your cousin, instead pulling records search and seeing you share a grandparent.
Finally, using dna to determine ancestry says absolutely nothing of value. Your culture is not determined by genetics; and. Either was theirs. Cultural heritage is not something that can be parsed from DNA.