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A ripe banana (Brownish)
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50 ml of water (About a half cup)
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2 teaspoon of salt
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2 teaspoon Dishwashing soap or detergent
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Rubbing alcohol (cold)
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Coffee filter
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A test tube (or narrow glass)
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Narrow wooden stirrer
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Peel and smash half of the Banana into a pulp
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Add the 50ml of water(must be at ambient temperature), the salt and the Dishwashing soap
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Stir until a soft foam starts to appear
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Let the mix pour through the coffee filter (about five minutes)
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Throw out the coffee filter and its content, keep the liquid
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Take a 2ml sample and pour it in the test tube
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Add 4ml of alcohol, two layer should form in the test tube
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In the alcohol layer, a white cloud with bubbles should appear, this cloud is DNA!
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