It's present in nearly every cell of our bodies. Flakes of skin, drops of blood, hair, and saliva all contain DNA that can be used to identify us.
DNA evidence is especially valuable in identifying a criminal and exonerating the innocent. This fascinating science is portrayed on TV dramas as quick and simple when in fact it's a complicated process than most people realize. Criminalist Alexis Meeker explains the principles of DNA testing and analysis to create a profile or genetic blueprint.
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To learn more about the Sheriff's Department Regional Crime Laboratory visit sdsheriff.net/crimelab/forensicdisciplines.html.
