What was the most important discovery in Scientific Discovery

I think that the most important scientific discovery was DNA. I think that DNA was the most important discovery because DNA is part of our body and without it we can't get genes out of us. I also think that DNA was the most important scientific discovery because DNA can tell you many things. For example, it can tell you the parts of DNA and can also tell you hat color they are. I also think that DNA was the most important scientific discovery because DNA can tell you if the offspring came out as the mom or the dad.
        I also think that the most important thing for the scientific discovery was DNA  because without the DNA with have, we wouldn't live. I also think that DNA was the most important scientific discovery because if we were in a crime scene and we didn't do it, how could the police tell? They would think that you were the one that started the crime scene.. This is why I think that the most important scientific discovery was DNA.