February 4

DNA Extraction Lab: "My Fruit is Alive!" 🧬🍓

In this lab, you extracted real DNA from fruit! DNA, or deoxyribonucleic acid, is the genetic blueprint for all living things, including the fruits we eat. This experiment helped you see DNA with the naked eye by breaking open cells and isolating their genetic material.

DUE February 5

What You Did:

1. Prepared the Fruit Sample

   • Mashed up strawberries, kiwi, or banana to break open the cells.

   • Added an extraction buffer (soap and salt) to help dissolve cell membranes.

2. Filtered the DNA Solution

   • Used a coffee filter and funnel to separate the liquid containing DNA.

3. Extracted DNA with Alcohol

   • Slowly poured ice-cold isopropyl alcohol into the test tube, allowing DNA to precipitate and form visible strands.

   • Used a wooden skewer to lift out the DNA.

4. Analyzed the Results

   • Observed the appearance of DNA and recorded its color, texture, and structure.

   • Answered questions about the function of soap, the structure of DNA, and real-world applications of DNA extraction.

Key Takeaways:

✅ DNA is present in all living things, including the foods we eat.
✅ Soap helps break open cell membranes to release DNA.
✅ Cold alcohol makes DNA visible by causing it to clump together.
✅ DNA extraction is used in real-world science for genetic research, forensic science, and medical advancements.

Why This Matters:

This experiment gave you hands-on experience in biotechnology and genetic science. DNA extraction is a fundamental technique used in crime investigations, ancestry research, and medical diagnostics.

Great job extracting the blueprint of life from fruit! Keep exploring the science of genetics and how it shapes the world around us. 🔬✨