2. strawberry DNA
extraction

3. DNA: deoxyribonucleic acid
all living things are coded with
DNA: deoxyribonucleic acid
adenine (A)
guanine (G)
cytosine (C)
thymine (T)
Nucleotides-
building blocks of DNA
99.9% of human DNA is exactly the same.
3 Billion bases, 20,000 genes, 23 (46) pairs of chromosomes

4. strawberry DNA extraction Can we see DNA?
Octoploid: 8 copies of each chromosome
7,096 Genes
Can we see DNA?

5. The DNA is stored in the nucleus of cells.
To access the DNA, we need to
Break through the cell wall
Break through the cell membrane
Extract the DNA

6. strawberry DNA extraction
Materials
Plastic Bag
Soap
Strawberries
Salt Solution
50 ml tube
Rubbing Alcohol
5 ml tube
Wooden Stirrer
Funnel
Plate
Filter

7. strawberry DNA extraction
Put strawberry into Ziploc bag.
Add 2 ml Salt Solution to bag, close bag, mash for two minutes. (Breaking cell wall)
Pour the strawberry solution through the coffee filter/funnel into the group 50 ml tube. Add a drop of soap to the tube. (Bypassing cell membrane)
Swirl this tube, then transfer to the 5 ml tube.
Add 2 ml rubbing alcohol to the 5ml tube. Do not stir. WATCH
Wind the DNA out with the wooden stirrer

8. Questions?

10. THANK YOU!
Sarah Dinger
Project PLANTS