AGENDA Who Done It Workshop Continental Breakfast Welcome and Introductions Who Done It Lab Overview of SCBC Resources on MATSC Reserving Your Kit on LARS Feedback
Agenda Forensics Overview Pipetting: video, steps in procedure, practice, and assessment Gel Electrophoresis Part 1: video, card sort, and prepare agarose gels (follow the SOP) Practice pipetting and loading gel wells Prepare your Samples Gel Electrophoresis Part 2: load samples and run gels Analyze results and determine identity of criminal Performance Assessment: Creating a Standard Curve to identify an unknown
DNA Day April 14 th 2009 DNA Day
National Human Genome Research Institute: DNA Day April 14 th 2009 DNA Day
Who Done It? Before you can put your Crime Scene Investigator hat and determine WHO committed the crime, you must first lean need to how to pipette and load dyes into a gel.
The Basic Laboratory Tool: Micropipette
Part I - An Introduction to Pipetting gen.usingmicro/
How do you use a micropipette? (Prepare)
When using a Pipette raise the tube to eye level and remember: Number in red represents the decimal place for the P-20 Use the knob on the handle to change the volume Always use the pipette with a tip Feel the pressure difference between first stop and second stop First stop aspirates (draws up the solution) Second stop dispenses (pushes out) the solution
Learning a New Skill: Micropipetting (Practice)
Setting the Volume on a Micropipette: Think (Assessment) 1)The smallest amount of volume that I can measure with a P-20 pipette is… 2) When I use a P-20 pipette the maximum volume I can measure is…
Thoughts?
Gel Electrophoresis
Making an Agarose Gel agarose-gel//
Electrophoresis and Gel Analysis analysis/
Follow the SOP to Melt and Pour the Agarose Gel
Place in the microwave
It is ready to pour when it is cool to the touch… The solution should become clear…
Use the 6 well side of the Comb
Pour the agarose and let it solidify Remove the comb after the gel has solidified
Gel Electrophoresis Card Sort
Part II: Preparing the Samples
Practice Loading Dye into a Gel: Fill with 1X SB Buffer
Place the gel tray in the chamber with the wells closest to the negative end Pour buffer into the chamber so that it covers the gel completely
Load the wells, be careful not to poke a hole…
Place the hood on top of the chamber and press run button on the carriage Let it run for minutes
Part III: Analyze the Results and Determine who Committed the Crime
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Part IV: Use mathematics to Create a Standard Curve and Identify an Unknown (Performance Assessment)