I spent the five happiest years of my life in a morgue. As a forensic scientist in the Cleveland coroner’s office I analyzed gunshot residue on hands and clothing, hairs, fibers, paint, glass, DNA, blood and many other forms of trace evidence, as well as crime scenes. Now I'm a certified latent print examiner and CSI for a police department in Florida. I also write a series of forensic suspense novels, turning the day job into fiction. My books have been translated into six languages.
Your nuclear DNA is the same in the skin cells holding your hair in place, your saliva, your blood, your skin, your bone marrow etc. Your friend's DNA is of course different from yours, but the same in their saliva, their blood etc. The criminals probably threw someone else's hair around the crime scene so it wouldn't match them.
As far as I know since they would all be the same type of cells, they could not be separated.
Like any other line of work, it all depends upon the mistake made, what effects it had, and how culpable you are. If it's a typo, just fix it and maybe make a note in the file. If you get someone killed, your boss will probably have to fire you. If it was an honest mistake, then you might get a note in your file. If you steal or invent evidence, you'll be fired and probably not work again.
Pros: Advanced technology and political attention (i.e., funding)Cons: Reality--evidence isn't always there, the job can be dirty and hard, budgets are always limited
Emergency Room Manager
What is the most bizarre thing you've seen in your ER?
Sr. Software Engineer
Is it basically impossible for a skilled programmer to be out of work these days?
Architectural Project Manager
Were there any structural deficiencies in the Twin Towers that made them fall?
See above.
Yes, quite possible. The breast bone blocked the bullet from hitting anything vital and so it wouldn't be fatal. We've had plenty of people shoot themselves in the head but the skull deflected the bullet enough that they either survived or had to fire a second shot.
I wasn't aware that there were theories other than: Do the right thing. Don't do the wrong thing.
Figuring out which is which isn't really that hard. Doing it might be, but it's usually not hard to figure out.
Hope that helps!
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