DNA Fingerprinting 13.3 What is DNA used for?

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Presentation transcript:

DNA Fingerprinting 13.3 What is DNA used for? Examples from http://www.scq.ubc.ca/a-brief-tour-of-dna-fingerprinting/

DNA Fingerprinting was invented by in 1985. The first conviction of a criminal based on DNA evidence in the US was in 1988.

Everyone’s complete DNA is unique Exception: the DNA of identical twins

DNA Fingerprinting can be useful for: Identifying a criminal Identifying a person’s remains (disaster victims) Conducting a paternity test Matching organ donors

Making a DNA Fingerprint

Reading a DNA Fingerprint

DNA Database The FBI has compiled a national database of DNA profiles. This is called CODIS (Combined DNA Index System)

If investigators have DNA evidence but no suspects, then they can compare crime scene DNA to profiles stored in a database. Ex. Johnia Berry bill

Mitochondrial DNA It is maternally inherited. It is taken from the mitochondria of bones and teeth. You can compare a mother to a missing person. Ex. –soldiers