WACE 2025 HUMAN BIOLOGY
| Front | Polymerase Chain Reaction (PCR) |
| Back | Segements of DNA are artificially copied through multiple cycles using DNA polymerase |
| Front | Potassium-argon dating |
| Back | Based on the decay of radioactive potassium-40 form calcium-40 and argon-40Must be buried in volcanic ash |
| Front | Stratigraphy |
| Back | Study of layers |