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Introduction of the concept of 'particles' which would later be known as genes by Gregor Mendel
Introduction of the concept of 'particles' which would later be known as genes by Gregor Mendel -
Basic structure of DNA known
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Experiments by Oswald Avery, Colin MacLeod and Maclyn McCarty proved DNA to contain genes
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Erwin Chargaff had observed that the proportion of cytosine and guanine were the same. Which held true for adenine and thymine as well.
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Linus Pauling correctly proposes the α-Helix model for DNA
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X-ray diffraction by Rosalind Franklin yields best results, produces the two stranded helical model
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Using Rosalind Franklin's findings, James Watson and Francis Crick assembled the double helix model