This week during science we did a lesson extracting DNA from strawberries. The students were so engaged and had a lot of great questions.
First, we talked about what is DNA and where you find it? Then for the experiment, students chose a strawberry, putting in their bag. They smashed the strawberry as dish soap, water, and salt was added.
Once the strawberries were smashed, the mixture was strained through a filter allowing the liquid to fill the cup. Then we added rubbing alcohol (acid) which separates the DNA in the liquid.
Since strawberry DNA has eight copies of each chromosome (called an octoploid), it is easier to see. When the DNA floated to the top, students extracted it and put it into their tiny vial.
The class learned a lot and had a great time with this experiment! If you are interested doing this with your class, there are many tutorials online.
Have a great week!
Karen
