6 ms·

Even if you leave DNA everywhere you go, but if law enforcement doesn't have your DNA on file, there's nothing to match it to.

• dekhn 4y ago
  that's only true in a world where there is no genetic history/population structure, and people don't contribute to 23andMe and similar systems.
• astrange 4y ago
  This works by matching to your relatives and assuming you have the same last name, not to you.
  • chromatin 4y ago
    Pedantic: Has nothing to do with "same last name"
    • astrange 4y ago
      It's been done exactly that way before. https://www.kold.com/2022/09/29/dna-genealogy-led-arrest-phoenix-canal-murders-case/ https://www.kold.com/2022/09/29/dna-genealogy-led-arrest-pho...
• xeromal 4y ago
  I think what they're saying is they could simply get your DNA the next time you go to the DMV and have database if they really wanted it.