Gabby Lacobie and Kaylee Smith
DNA (deoxyribonucleic acid) fingerprinting - A test to identify and evaluate the genetic information called DNA in a person's cells. DNA fingerprinting, also called DNA typing, DNA profiling, genetic fingerprinting, genotyping, or identity testing.
Fun Fact-DNA Fingerprinting has saved 329 wrongfully convicted people, including 18 who spent time on death row.
Who invented DNA Forensics?
How is DNA used to identify people?
To identify a person using DNA, forensic investigators first have to create a genetic profile of the DNA. A genetic profile is a set of numbers that specifically to the person. To do this they must break down the DNA and look for repeating genes. Since humans share 99% of their DNA, the investigators are looking for Short Tandem Repeats, also known as STR, which vary in between individuals. Because a person inherits different genes from each parent, the likely hood of two unrelated people having the same pattern is highly improbable.