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First researcher to isolate and identify nucleic acid
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Proposed that inherited traits would be inherited through a "giant hereditary molecule" containing "two mirror strands that would replicate in a semi-conservative fashion using each strand as a template"
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Reported by Frederick Griffith, suggested that bacteria are capable of transferring genetic information through a process known as transformation
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The molecular structure for DNA is first predicted. The chemical composition of hair and wool fibres is first determined using x-ray diffraction
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Performed experiment that isolated DNA as which the material of which genes and chromosomes are made. Suggested that DNA might even be the gene
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Reported that DNA is the substance that causes bacterial transformation
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Created "Chargaff's Rules" that state DNA from any cell of all organisms should have a 1:1 ratio (base pairs rule)
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A series of experiments performed by Alfred Hershey and Martha Chase. Their experiments confirmed that DNA is the genetic material
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James Watson and Francis Crick discovered and built the first model of DNA helix
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Using x-Ray diffraction images of DNA helped lead to the discovery of the double helix
