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Experiment: fruit flies (tested mutations on flied)
Contributions: wrote the PNAS (provided foundation for the field of genetics), discovered chromosomes where the carriers of genetics, discovered genes to be linked together

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Experiment: used two strains of Streptococcus (Type S and Type R) and injected the different types into rats
Contributions: reported first widely accepted demonstrations of bacterial transformation

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Experiment: took live R and heat-treated S and mixed it with 1 of 2 enzymes (proteases or DNase)
Contributions: determined cause of the transformation in Griffith's experiment, showed that DNA was the cause of transformation

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Experiment: measured the amount of the 4 bases in many organisms
Contributions: found that the amount of Adenine and Thymine are almost the same and Cytosine and Guanine are almost the same (Chargaff's Rules)

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Experiments: used bacterial cell and exposed the cell with either a radioactive protein capsule or radioactive DNA and then they separated the bacterial cells from the supernatant
Contributions: concluded that DNA was the genetic material and the only need for the protein was packaging

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Experiment: photo 51
Contributions: Franklin found out how to look at wet DNA, Wilkins gave the image to Watson and Crick

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Experiment: DNA= double stranded helix with a backbone of sugar and phosphate groups
Contributions: used photo 51 to determine double helix

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Experiment: grew E.coli in heavy nitrogen, bread E.coli until they were all heavy nitrogen, recorded the replication of all
Contributions: found that DNA replicates (DNA splits in half)