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Teaching Dna Extractions From Fruits (Strawberry, Banana, Kiwi, And Watermelon), Amadea Pourier, Dillon Nelson, Wiyaka Pomarleau, Kay Cutler, Madhav P. Nepal
Teaching Dna Extractions From Fruits (Strawberry, Banana, Kiwi, And Watermelon), Amadea Pourier, Dillon Nelson, Wiyaka Pomarleau, Kay Cutler, Madhav P. Nepal
iLEARN Teaching Resources
In this lesson, students will use a simple DNA extraction solution and isopropyl alcohol to extract DNA from strawberries, banana, kiwi, and watermelon. The extraction solution consists of dish detergent, water, and table salt. Grinding or crushing the soft fruit tissue will separate the cells. The dish detergent breaks down the membranes, exposing the DNA to the solution. The salt helps the DNA molecule to stick together from the proteins. The cold alcohol dissolves everything but the DNA, which forms an insoluble layer of the DNA allowing it to be visible.