This resource focuses on the biological technique called gel electrophoresis or DNA FINGERPRINTING. It's a great lab for a life science class, biology, or forensics. Using a paper model of gel electrophoresis, students explore crime scene investigation CSI with their own hands and minds!
The package begins with a crime scene description of a robbery in a mall jewelry store where some blood evidence was left behind. Students are introduced to three possible suspects who give DNA samples as part of the police investigation. Students simulate the action of restriction enzymes to cut samples of DNA into fragments and then model the gel electrophoresis using paper DNA fragments glued to a paper gel. After analyzing the pattern of DNA fragment distribution, the culprit can be determined and apprehended.
A REAL JEWEL THIEF – Crime scene description. Mall jewelry store robbery.
DNA FINGERPRINTING – A fully detailed description of the procedures used to analyze DNA using the gel electrophoresis method. Diagrams included to assist student understanding.
MODELING DNA FINGERPRINTING – Lab activity
Procedure for students to prepare the DNA and separate it in order to construct a model DNA electrophoresis gel and use it to compare blood samples of the suspects with that found at the crime scene.
SUSPECT INFORMATION CARDS AND MODEL GEL CHARTS – Information provided in multiple formats. The larger colored cards (3 per page, portrait orientation) can be printed on cardstock and laminated for station work. The smaller cards can be printed as part of a student work packet, or just run off and provided to each student team to save paper. If the students work at stations, you can run off the DNA strips separately and provide them to the students so they do not need to cut up the originals.
SUPPLEMENTAL INFORMATION– Baby Mine? and Oh, Deer! Introduce students to two additional uses of gel electrophoresis for comparison of individuals and species. Multiple choice questions, short answer questions, and work problems for students to figure out reinforce the lab’s main points.
PRACTICE - Multiple choice questions, short answer questions, and work problems for students to figure out reinforce the lab’s main points. Suitable for homework, quiz, station work.
COMPLETE ANSWER KEY INCLUDED.
Check out these other HIGH SCHOOL BIOLOGY products:
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Biology GRAPHING PRACTICE - Respiration
Modeling Photosynthesis - Visualize Chloroplasts in Action
Non-Fiction Reading: Alien Invaders - the GYPSY MOTH
Photosynthesis Test Bank - 100 Editable Multiple Choice Questions
© 2015 Terri Lester for Strawberry Shake. All rights reserved. Purchase of this unit entitles the purchaser the right to reproduce the pages in limited quantities for classroom use only. Duplication for an entire school, an entire school system or commercial purposes is strictly forbidden without written permission from the publisher.
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