GCSE Biology DNA Extraction Practical

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7 Terms

1
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DNA Extraction 1

Mash the strawberry in a pestle and mortar

2
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DNA Extraction 2

Add 3ml of detergent, 50ml of water and 1/2 a spatula of salt to the strawberry. This is the DNA extraction liquid

3
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DNA Extraction 3

Add half a spatula of protease

4
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DNA Extraction 4

Put the mashed-up strawberry and juice through filter paper and funnel into a test tube

5
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DNA Extraction 5

Put a small squirt of ice-cold ethanol into the solution

6
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DNA Extraction 6

The DNA will look white and will be seen forming at the interface of the strawberry liquid and the alcohol

7
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DNA Extraction 7

Use tweezers to gently remove the DNA