Strawberry DNA
Question: Do strawberries like humans and animals have DNA?
Hypothesis: We think strawberries have DNA because it is a living thing.
Materials:
1. Dawn dish soap
2. Medicine cup 3. Plastic bag 4. Tweezers 5. Strawberry 6. Measuring cup 7. Measuring spoon 8. Mortan salt 9. Isopropyl alcohol 10. Strainer 11. Water |
Our Experiment
Safety Procedures<Explain in detail any precautions>
Do not drink or put isopropyl alcohol anywhere near your mouth. |
Procedure:1. Pour 90 mL of water into a beaker 2. Pour 10 mL of dish soap into the beaker 3. Add 1/4 of a teaspoon of salt to the beaker 4. Mix it up 5. Cut off the stem of the strawberry 6. Put the strawberry into a Ziploc bag 7. Pour the mixture of salt, soap, and water into the bag 8. Remove all air in the bag and close it 9. Use hands to mash it up, and make sure to get out all big chunks 10. Pour mush in a strainer above a beaker and let all of the liquids drain out 11. Use a teaspoon to press down the liquids so there is no liquid left in the strawberry 12. Put the liquids into a different cup 13. Add 5 mL of cold isopropyl alcohol into the strawberry liquid 14. Use tweezers to extract the DNA Special Needs: We need to be near a sink and a garbage can. |
Watch us in action:
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The Science behind it
Each material plays a part when you are extracting the strawberry DNA. The dish soap helps dissolve the cell membranes. The salt breaks up the protein chains that hold the nucleic acids together releasing the DNA strands. DNA is not soluble in isopropyl alcohol, and even less when it is cold. Strawberries are the best fruit to extract DNA from because they are octoploid, meaning they have eight copies of each DNA chromosome, which makes strawberry DNA easy to see. Humans only have two copies of each DNA chromosome.
Later on you can Add Graphs with results
Later on you can Add Graphs with results
Conclusions
About SamanthaSamantha is 11 years old and loves having fun and spending time with her friends while she horseback rides on her horse FRITZ. She also loves spending time with her mom, dad, brother and her dog and horse.
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About Gabriella
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