-
Miescher
Friedrich Miescher identified DNA as a molecule in 1869. Nucleic acids were discovered. -
Period: to
The Discovery of DNA
-
Garrod
Archibald Garrod linked proteins to genetic traits. -
Period: to
The Discovery of DNA
-
Griffith
British scientist Frederick Griffith performed research using mice and disease-causing strains of bacteria to come up with a hypothesis on TRANSFORMATION. -
Griffith Publishes
Frederick Griffith publishes the results of his experiments : he showed that information contained in a factor was able to change benign bacteria into a harmful bacteria. -
Avery
Based on Griffith's research, Oswald Avery publishes the results of his own experiment in 1944: DNA is what stores and sends genetic information from one generation to the next. -
Hershey-Chase
Alfred Hershey and Martha Chase ran a series of ecperiments to confirm that DNA was the genetic material in organisms. Viruses were used to prove this. -
Chargaff
Erwin Chargaff discovered that the corresponding nucleotide bases in DNA appear in equal ratios. Chargaff's Rule: amount of adenine = amount of thymine; amount of cytosine = amount of guanine. -
Rosalind Franklin
Rosalind Franklin used x-rays to figure out the repeating structure of a DNA molecule. Her research was important to the creation of the Watson-Crick model. -
Watson-Crick Model
Watson and Crick published their paper describing the double helix structure of the DNA molecule. -
Recombinant DNA
Cohen and Boyer discover the ability to combine genes from two different bacteria into a single DNA molecule.
