The second is from the suspect. The scientist explains that each person's DNA is unique. Since the banding patterns of the two samples match, both hairs had to come from the same person. The thief is found guilty and sent to prison.

To learn more about DNA fingerprinting:

1. Visit this Web site. Click "Next" each time to read the first 6 screens.
DNA Fingerprinting

2. Then return to this page and click the Go On arrow.

3. For more information, visit these Web sites.
DNA Forensics -- Problem 2
DNA Forensics -- Problem 3