DNA From Fruit Smoothies
Instructor will prepare a smoothie for you utilizing four ingredients:
- Frozen strawberries
- Banana
- Honey
- Orange juice
You will be provided with a small cup of smoothie, one 50ml conical tube, and one microfuge tube containing approximately 1 ml of liquid dish soap.
Students
- Pour an aliquot of approximately 5ml of fruit smoothie into 50ml conical tube. You may drink the rest!
- Add all of your liquid soap to your tube of smoothie, and mix gently (do NOT shake - try not to create foam/bubbles) for about 3 minutes.
- Open your tube. The instructor will come around the room and SLOWLY pour an equal volume of 95% alcohol down the side of the tube so that it forms a layer on top of the fruit smoothie/detergent mixture. Do NOT mix the two layers at this point.
- Recap your tube and observe the gradual appearance of DNA at the interface of the two layers. Your instructor may give you the opportunity to try to collect the DNA.
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