Blogs and News - St George's School For Girls, Edinburgh
On 7 June 2018, Primary Six did an experiment to find banana DNA. First, we got our banana, cut it in half and placed in a plastic bag and mushed it up for one minute. Then we added one teaspoon of salt in hot water. Then we added washing-up liquid and tried not to let it foam up. After that we got filter paper, folded it and placed the folded filter paper in the conical flask.
Then we poured the sloppy banana mix in to the flask slowly. In our pairs we watched as the mix fell through the paper. It took a very long time but eventually it was all through and we added alcohol. After a while there was white foam on the top of the liquid MUSH. It was the banana's DNA!