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Gregor Mendel Experiments with pea plants
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Mendel's work is rediscovored
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Sutton discovovers the theroy of heredity
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Griffith researches if genes are DNA or protien
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Scientist Avery descoveries DNA is hereditary
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Scientist Chargaff finds that the bases adenine = thymine, and cytosine = guanine
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DNA is determinmed to be genetic