1. Do-NOW!!
Strawberries are not diploid, they are octoploid. Why might this make it easier for us to see strawberry DNA than human DNA?
After reading the procedure, identify the role of soap, salt, and strawberry “mushing” in the experiment.
To refresh your memory, describe the structure of a DNA molecule.

2. Lab Procedure: DNA Extraction from Strawberries
Safety:
1) Careful with all glassware
2) Safety glasses?

3. Procedures (continued)
Answer pre-lab questions BEFORE beginning lab
Changes to Materials Section:
1) coffee filter (not cheesecloth)
2) pipette (not glass rod)
3) teacher will provide small amount of ethanol (not 20 mL)

4. Procedure Mush strawberry in ziploc bag Add 10 mL of extraction buffer
Mush again
Filter strawberry slush through coffee filter
The teacher will pour cold ethanol into the test tube
Make observations!
Dip pipette into liquid and observe what happens

5. Set-Up and Clean-Up Where should I get my materials?
How should I clean up?
What should I do afterwards?