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  came up with his three Principles (dominance, segregation, indep. assortment)
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  isolated nucleic acid (now called DNA)
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  Mendel's work rediscovered and translated into English
 experimentation with sweet pea plants
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  Chrm Theory of Heredity
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  came up with the term "gene"
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  experimented with fruit flies- found that not all traits sort independently
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  discovered that DNA could be stained inside cell with a red dye
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  experimented with pneumonia in mice
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  Gathered evidence that DNA is genetic material
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  discovered that the amount of guanine and cytosine equal each other and that the amount of adenine and thymine equal each other
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  created images of DNA
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  supported Avery and Co.'s findings-discovered that DNA took control of bacterial cell and forced it to make new viruses
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  discovered structure of DNA