1. Polymerase Chain Reaction - PCR

2. The polymerase chain reaction (PCR) is a technique to amplify a piece of DNA very rapidly outside of a cell.

4. The polymerase chain reaction (PCR).

6. Starting with a single molecule of DNA, 25 rounds or cycles of PCR will produce about 10 million identical DNA molecules!!

9. Restriction fragment analysis by Southern blotting.

10. DNA fingerprints from a murder case.

11. Individuals have unique DNA fingerprints because of restriction length polymorphisms (RFLPs).

13. Many argue that DNA evidence is more reliable than eyewitnesses in placing a suspect at the scene of a crime.

15. An example of simple tandem repeat (STR) alleles.