Medicine 4: What *breakthrough* was made in *1951* which helped scientists to get a *better understanding* of *DNA*?

Question

What *breakthrough* was made in *1951* which helped scientists to get a *better understanding* of *DNA*?

Happy Bat · Accepted Answer

In *1951* an *X-Ray photograph* was taken which showed an *image* of what *DNA* looked like

What breakthrough was made in 1951 which helped scientists to get a better understanding of DNA?