What did rosalind franklin contribute to the understanding of dna molecules?

Rosalind Franklin had a crucial role in the discovery of the double helix structure of DNA. Her contribution to science was enormous even though her work was underestimated. She studied X-ray diffraction technology and she applied these methods to the study of DNA. This X-ray diffraction picture of a DNA molecule was the inspiration for Watson and Crick’s construction of  DNA model.

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask