What was Friedrich Miescher's contribution to science?

Friedrich Miescher discovered something super tiny inside our cells that helps them work, DNA.

Imagine your body is like a big, busy toy factory. Inside each toy (which is like a cell) are instructions telling it how to build itself and do its job. Friedrich found those instructions, he called them nuclein, which we now know is DNA.

Think of DNA like a secret recipe that lives inside every tiny worker in the factory (the cells). This recipe tells the workers what kind of toy to make and how to do it. Friedrich was the first person to find this special recipe, he looked really closely at some white blood cells, which are like the body’s superhero soldiers.

Friedrich didn’t know how important his discovery would be, but it turned out that DNA is the reason we look like our parents, why we can grow and heal, and even why we can learn new things. His work was like finding a super special ingredient that makes life possible!