1 ene 1952 año - Alfred Hershey and Martha Chase
Descripción:
 - Confirmed that DNA is genetic material by using redioative isotopes and tested it to see where it goes when there was a virus, and went to phosphorous 
- Discovered that DNA is a nucleic acid 
- Found that DNA transfers between generations 
Añadido al timeline:
fecha:
1 ene 1952 año
Ahora mismo
 ~ 73 years ago