DNA Analysis

DNA analysis is a powerful tool as each person’s DNA is unique (except in the case of of identical twins). Therefore, DNA evidence collected from a crime scene can implicate or eliminate a suspect. It also can analyze unidentified remains through comparisons with DNA from relatives. Also, when evidence from one crime scene is compared with evidence from another, those crime scenes can be linked to the same perpetrator locally, statewide, and nationally.

DNA is also a powerful tool because when biological evidence from crime scenes is collected and stored properly, forensically valuable DNA can be found on evidence that may be decades old. Therefore, old cases that were previously considered unsolvable may contain valuable DNA evidence capable of identifying the perpetrator.

Like Fingerprints

DNA is often compared with fingerprints in the way matches are determined. When using either DNA or fingerprints to identify a suspect, the evidence collected from the crime scene is compared with a “known” standard. If identifying features are the same, the DNA or fingerprint can be determined to be a match. However, if identifying features of the DNA profile or fingerprint are different from the known standard, it can be determined that it did not come from that known individual.

(Information provided by the Department of Justice)

Back To Top Of The Page

Go Back To The Forensic DNA Page

Go From DNA Analysis Back To The Home Page

Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.