Early pioneers:
* Friedrich Miescher (1869): He first isolated a substance he called "nuclein" from the nuclei of white blood cells. This substance was later found to be DNA.
* Phoebus Levene (early 1900s): He determined the basic structure of nucleotides, the building blocks of DNA.
* Oswald Avery (1944): He and his colleagues demonstrated that DNA, not protein, is the carrier of genetic information.
The double helix:
* Erwin Chargaff (1950): He discovered the base pairing rules of DNA (adenine with thymine, cytosine with guanine), which were crucial for understanding its structure.
* Rosalind Franklin (1952): Her X-ray diffraction images of DNA were instrumental in revealing its double helical structure.
* James Watson and Francis Crick (1953): They used Franklin's data, along with Chargaff's rules, to propose the now-famous double helix model of DNA.
Other important contributors:
* Maurice Wilkins: He worked with Franklin and provided her with the DNA samples she used for X-ray diffraction.
* Linus Pauling: He was a leading contender to discover the DNA structure, but his model was incorrect.
* Frederick Sanger (1977): He developed a method for sequencing DNA, which revolutionized the field of genetics.
It is important to note that the discovery of DNA was a collaborative effort, and the contributions of each scientist were essential to the final understanding of its structure and function.
