Onion DNA

8th grade got to do an exciting extension activity during our most recent Flex Day – extract the DNA from the cells of an onion! Using only common household ingredients, the students and I prepared a mixture of chopped onions, water, meat tenderizer, and dish soap. We blended and strained the mixture, and divided it into test tubes. The students carefully poured some rubbing alcohol into the test tube, allowing the extracted DNA to separate from the mixture. This activity brings to life some of the concepts 8th grade is learning during our heredity and genetics unit!

Comments are closed.