You will need:
- 2 plastic cups (should hold at least a 16oz)
- 1/2 cup icy cold water
- Soap (dish soap, hand soap, or detergent)
- 1 large, cold strawberries
- Cold 70% isopropyl alcohol
- Plastic, sealable bag
- Mixing stick
- Coffee filter
Step 1: Make the Extraction Solution
2: Add 1/2 teaspoon of salt
3: Add 2 teaspoons liquid soap
4: GENTLY mix, careful not to create bubble but dissolve the salt
The salt will break apart the proteins and other things that come out of the strawberry cells. The soap will melt the cell walls because the walls are made of lipids (or fats). Just like doing dishes, soap melts away the grease and fat.
Set solution aside
Step 2: Strawberry Smash!
Pour in the extraction solution, remove as much air as possible, seal bag and gently squish the bag for 2 minutes. Let the bag sit for 8 minutes to let the soap and salt extract the DNA from the cells.
Step 3: Filtering
Swirl the cup a few times again being carefully not to create bubbles. Pour the icy cold isopropyl alcohol into a cup. Tilt the strawberry liquid cup to the side and SLOWLY pour the isopropyl into in cup. Pour about 3/4 inch of isopropyl.
Step 4: Look at the DNA
Take a toothpick or your mixing stick and you can pull the DNA up. It will look like sticky snot. Those thin strands of white are hundreds of strands of long DNA.
If you want, gently spool up the DNA and put it into a test tube or shot glass with some isopropyl in it. You can show you're friends if you want! :D