Frederick Sanger was a very smart man who discovered a lot about DNA.
DNA is like a recipe book for living things. It tells them how to look and act.
Sanger found a way to read and understand the recipe book, which helped scientists learn even more about living things.
His discovery also helped doctors develop new ways to treat diseases, like cancer.
Sanger won two big awards for his work and is still remembered as one of the greatest scientists of our time!