Tag: fingerprint
-
Solving Crimes with DNA and Electrophoresis
DNA analysis has become a cornerstone of modern forensic science. Because every individual (except identical twins) has a unique DNA profile, scientists can use DNA evidence from crime scenes to help identify suspects or eliminate individuals from suspicion. One common method for comparing DNA samples is gel electrophoresis, a technique that separates DNA fragments based…
-
Science of Fingerprints: A Hands-On Activity
Fingerprint analysis is a fascinating way to explore individuality and forensic science. A lesson on this topic begins with an introduction to fingerprints, explaining their uniqueness and role in forensic investigations. Use Google slides to show students the science of fingerprinting. It covers the three main fingerprint patterns—loops, whorls, and arches—using clear diagrams and descriptions…
-
How DNA Fingerprints Are Used to Solve Crimes
Students learn how DNA fingerprints are made using gel electrophoresis. They identify which suspects match the DNA evidence.