Description
Use evidence found in DNA fingerprint patterns to argue which suspect committed a crime.
PE: HS-LS3-2
Time Requirement: 2 45-minute Class Periods
SEP: Engaging in argument from evidence
CCC: Cause and Effect
DCI: LS3.B: Variation of Traits
Intermediate—Easy to perform; requires some background knowledge
- Introduce students to the use of DNA analysis in forensic investigations
- Perform a technically simple, hands-on experiment in 45 minutes with 9-V batteries
- Discuss advanced topics of PCR and DNA fingerprinting
Solve a forensic mystery using the tools of biotechnology and the concept of DNA fingerprinting. Students cast agarose gels, load predigested DNA samples, and perform electrophoresis with one to three 9-V batteries. They stain the gels and analyze the banding patterns of DNA collected from the suspects and the crime scene. Demo kit includes beautifully illustrated instructions, free 1-year access to digital resources that support 3-dimensional instruction, as well as needed materials and equipment for 1 instructor to perform the demonstration twice to a classroom. Materials are durable and reusable with replacement parts available.