GRT
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I don't know about the "murder weapon" rule, but touch DNA has been thrown out in several cases, like this one.Are you saying that foreign (to the crime scene) and complete 'touch DNA' (whatever that is) profiles that are left on things like door knobs, walls, and other surfaces are not admissible in court?
Can you cite something that shows that? Or a case where such evidence has been thrown out?
I'm not an expert but that doesn't sound right. At all.
MOO
Update: Sorry for the repetitive post...down to the 'are you saying' LOL. I hadn't caught up yet.
It's also called "transfer DNA" because skin cells can transfer from a woman to a scarf she wears and then, when she hangs the scarf on a hook next to a man's coat, the cells transfer to his coat, and then later when his friend pats him on the back, they transfer to the friend's glove and then they're finally found on a cup the friend drinks out of.
That said, it's still DNA, and in this case, it points to BK. But, it doesn't mean he touched the sheath--he might have shaken hands with someone who then touched the sheath and transferred the DNA.
That's the science behind it. That's inescapable. MOO, that's what AT will argue.
So, while the DNA is still very important in this case, it's not like a drop of BK's blood was found on the sheath, which would have been the slam dunk the State needs.
The touch DNA is something, and I think it is a strong something. But, it's not the same as if they'd found DNA from bodily fluids.