[greedo]

There was a murder in Nebraska where crime scene was liberally cleaned with bleach to obliterate DNA evidence. Still no conviction despite a lot of circumstantial evidence. This was partially compounded by older DNA technology that destroyed the sample while processing it.

[inetknght]

> This was partially compounded by older DNA technology that destroyed the sample while processing it.

Can you point to current DNA tech which doesn't destroy the sample while processing it?

[brokenmachine]

For PCR you only need a super-tiny bit, then you can amplify it as much as you want. I guess you're still technically destroying that tiny bit, but it hardly makes a difference when you only need a few molecules.