DNA


 * You are going to extract the DNA from a kiwi fruit. Sometimes we forget that fruit are living things, but right inside the nucleus of each cell of every piece there is some tightly coiled DNA. **

** __ EXTRACTING DNA: This is what you need to do: __ **

 1. Get a quarter of a kiwi fruit, carefully peel the skin off and chop it up into tiny pieces.  2. Put the pieces of kiwi fruit into the bottom of a boiling tube and mash up carefully with a glass rod.  3. Add a spatula of salt and 2 fingers’ depth of washing up liquid to the boiling tube. Then half fill the boiling tube with water from the kettle.  4. Leave the tube to stand in a beaker of water at 60oC for 10 minutes.  5. While you are waiting, get a piece of filter paper, funnel and another boiling tube  6. Drain the contents of your tube through the filter paper so that the green liquid goes into the clean boiling tube.  7. Stand the boiling tube in a beaker of ice cubes for 5 minutes.  8. Take the cooled tube to the teacher who will pour ice cold ethanol down the side of the tube. Your kiwi DNA will float out of the mixture and you can fish it out.

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