How is DNA physically collected? What’s revealed? How is it matched to a database of people? And how are samples collected without contamination?
In: Biology
It’s usually collected on a sterile swab (pretty much a one sided q-tip) and placed in boxes or paper bags to transport to the lab for testing. Crime scene techs can also collect items to send to the lab.
DNA is unique to individuals except for identical twins so it can link a person to a crime scene/weapon/etc. There’s a database of people arrested or convicted of certain crimes that can be searched after a DNA profile is obtained.
Techs and scientist wear masks, lab coats, gloves, and clean with bleach to help prevent contamination.
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