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Period: to
Time span of recent DNA research
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Friedrich Miescher
First researcher to isolate and identify nucleic acid -
Nikolai Koltsov
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" -
Griffith's experiment
Reported by Frederick Griffith, suggested that bacteria are capable of transferring genetic information through a process known as transformation -
William Astbury
The molecular structure for DNA is first predicted. The chemical composition of hair and wool fibres is first determined using x-ray diffraction -
Oswald Avery
Performed experiment that isolated DNA as which the material of which genes and chromosomes are made. Suggested that DNA might even be the gene -
Avery-Macleod-McCarthy experiment
Reported that DNA is the substance that causes bacterial transformation -
Erwin Chargaff
Created "Chargaff's Rules" that state DNA from any cell of all organisms should have a 1:1 ratio (base pairs rule) -
Hershey-Chase experiments
A series of experiments performed by Alfred Hershey and Martha Chase. Their experiments confirmed that DNA is the genetic material -
Crick and Watson
James Watson and Francis Crick discovered and built the first model of DNA helix -
Rosalind Franklin
Using x-Ray diffraction images of DNA helped lead to the discovery of the double helix
