DNA molecules are arranged as a tightly coiled helix. (:
Franklin
Maurice Wilkins & Rosalind Franklin : they developed a high quality x-ray diffraction photographs of strands of DNA. these photographs suggested that the DNA molecule resembled a tightly coiled helix and and was composed of 2 or 3 chains of nucleotides .
Franklin and Wilkins' X-ray diffraction photographs provided crucial evidence that DNA has a helical structure with a regular repeating pattern. These images were instrumental in discovering the double helix structure of DNA, as they revealed key features such as the helical nature and the distance between the chains. Their work greatly influenced Watson and Crick in their development of the model for the structure of DNA.
The photographs taken by Rosalind Franklin, particularly Photo 51, provided critical insights into the helical structure of DNA through X-ray diffraction imaging. Maurice Wilkins, Franklin's colleague, shared this data with James Watson and Francis Crick, who used it to inform their model of DNA. The combination of Franklin's detailed imaging and the collaborative efforts of Wilkins, Watson, and Crick ultimately led to the elucidation of the double helix structure of DNA in 1953. Their work highlighted the importance of collaboration and the impact of visual evidence in scientific discovery.
Maurice Wilkins and Rosalind Franklin.
Maurice Wilkins and Rosalind Franklin
Rosalind Franklin conducted the X-ray diffraction studies that provided critical data for the discovery of the double helix structure of DNA by James Watson and Francis Crick. Her work laid the foundation for understanding the molecular structure of DNA.
A helix
Franklin and Wilkins' X-ray diffraction data provided crucial information about the structure of DNA, including the helical nature and the spacing of the nitrogenous bases within the molecule. This data was instrumental in helping Watson and Crick propose their model of the double helix structure of DNA.
A helix
Rosalind Franklin's X-ray diffraction images which provided key insights into the structure of DNA. Maurice Wilkins also contributed to the discovery by working on the same subject as Franklin. Linus Pauling's work on the nature of chemical bonds was also influential in shaping Watson and Crick's model of DNA.
Wilkins contributed to the discovery of the DNA molecule by producing high-quality X-ray diffraction images, which were crucial in identifying the structure of DNA. Franklin's work on X-ray diffraction data also helped in determining the helical structure of DNA and contributed to the understanding of its molecular structure along with Watson and Crick.