Final answer:
Rosalind Franklin did not demonstrate that DNA replication was semi-conservative; her x-ray diffraction images were critical to Watson and Crick's DNA double helix model. Franklin wasn't properly acknowledged for her work during her lifetime and did not receive the Nobel Prize with Watson, Crick, and Wilkins.
Step-by-step explanation:
The statement that Rosalind Franklin's x-ray crystallography data was amongst the first to show that DNA replication was semi-conservative is false. While Franklin's contributions to the discovery of the DNA structure were pivotal through her high-resolution x-ray diffraction images, it was not her work, but later experiments by Matthew Meselson and Franklin Stahl in 1958 that provided strong evidence for semi-conservative replication of DNA. Nonetheless, Franklin's work did provide the crucial information that helped Watson and Crick to deduce the correct double-helix model of DNA.
Moreover, it is indeed true that Rosalind Franklin did not receive due recognition for her work from Watson and Crick, nor was she acknowledged with the Nobel Prize which was won by Watson, Crick, and Maurice Wilkins. The prize is not awarded posthumously and Franklin had passed away by the time it was given in 1962. This overlook is often cited as an example of gender bias in science and the undervaluation of contributions made by women scientists at that time.