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- carried out experiments on pneumonia bacteria and mice
- discovered something in the mice that caused the bacteria to change and kill the mice
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- discovered that DNA must play a big role in traits
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- discovered that there are equal amounts of the bases adenine and thymine and equal amounts of cytosine and guanine
- proposed that these bases paired with one another
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- used X-ray crystallography to find more clues about the structure of DNA
- these images suggested that DNA had a helical structure
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Used a kitchen blender to demonstrate unequivocally that DNA is the molecule of heredity. -
- with the help of Franklin's work Watson and Crick made the first DNA model
- They also assumed that A always pairs with T and C always pairs with G