My favorite candidate for 'getting cheated for credit' on the DNA discovery is Erwin Chargaff, whose work pointed towards the specific base pairing involved. Of course, the arbitrary 3-person cutoff for Nobel Prizes is not at all reflective of how science is done in practice in terms of the numbers of people involved over time in any major discovery:

> "Key conclusions from Erwin Chargaff's work are now known as Chargaff's rules. The first and best known achievement was to show that in natural DNA the number of guanine units equals the number of cytosine units and the number of adenine units equals the number of thymine units."

> "The second of Chargaff's rules is that the composition of DNA varies from one species to another, in particular in the relative amounts of A, G, T, and C bases. Such evidence of molecular diversity, which had been presumed absent from DNA, made DNA a more credible candidate for the genetic material than protein."

https://en.wikipedia.org/wiki/Erwin_Chargaff#Chargaff's_rule...

Not to distract from Rosalind Franklin's contributions, but if anyone is looking for a female role model in molecular biology and biochemistry with a major influence and a long career, Barbara McClintock is probably at or near the top of that list:

https://www.nature.com/scitable/topicpage/barbara-mcclintock...