Going to a crime lab tomorrow what question should i ask them about dan evidence?
just need some question
Answer:
I've got one question I guarantee no one else will ask, and the tech will be very impressed you know it.
Ask them what steps they take to ensure they don't get a false positive from testing one of the small minority of people that have two different DNA profiles in their body.
This is something fairly recently discovered, and most crime labs still don't check for it. Some people will inherit a complete DNA profile from each parent, and their body will contain one in certain body parts (hair, saliva, skin, semen), and another DNA profile everywhere else (liver, lung, heart, gallbladder). This was discovered when several mothers attempting to get welfare benefits for their newborn children were rejected because the required DNA test to prove maternity shower the women weren't the baby's biological mother - even though they were. After some investigation and studies, it was found that this actually happens. No one knows how many people it affects, because it hasn't been studied. But it has serious implications for the reliability of DNA evidence, as a killer with this condition could easily get off if the DNA taken by the police didn't match, but the DNA of their untested internal organs did.
Techs are aware of this, but can't do anything, so it'd be a fun question to ask that they won't ever expect.
Did or did he not have sex
How can you be sure DNA is unique...Have you tested everybody?
ask them why they presume black ppl are criminals & why babylon always pick on us, is it bcoz they see us as "easy" targets!?
Ask how much DNA they need to make a good comparison, and the sources of that DNA (blood, skin, hair).
Also ask what kinds of things will prevent them from getting a good DNA reading from the sample - bleach, too old, heat, etc.
How long does it take to actually test a DNA strand, and how backed up are the labs?
Ask about how DNA evidence became widely accepted in the criminal justice/forensic science field.
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