Between the pink filtered solution and the alcohol

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between the pink filtered solution and the alcohol, and the DNA is wound onto a glass stirring rod. The result is fine, white, hair-like stands. Data: Observation of strawberry DNA: Dried quickly to the watch glass and turned white; fine hair- like strands Weight of watch glass plus DNA: 41.76g Weight of watch glass: 41.74g Weight of DNA: .02g Weight of Strawberry: 10.73g Sample Calculations : Mass percent: (Weight of DNA/Weight of Strawberry) X 100 (.02g/10.73g) X 100= 0.19% Results and Discussion In conclusion, the isolation of DNA requires breaking the outer cellular membrane as well as the nuclear membrane. This was done by using a kneading the strawberries (mechanical action) and by using a slightly basic detergent which weakens the membranes as well as provides a more stable environment for DNA. Nucleases, enzymes that destroy DNA, were denatured by using heat. Meat tenderizer is added to the beaker that was to collect the filtrate because it contains enzymes that break down proteins. The detergent and strawberry solution are filtered. Alcohol
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is added and a bi-layer forms. Because DNA is not very soluble in alcohol, it precipitates between the filtrate and the alcohol. Then, it can be wound onto a glass rod. The DNA is a hair- like, fine, white strand.
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