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Gregor Mendel does seveal experements and uses his data to determine the rules of heredity.
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Miescher discovers a substance he dubs "nuclein" in pus
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William Atsbury hypothesizes that DNA has a double helix structure
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Oswald Avery uses experements with mice to prove that DNA controls the traits of bacteria
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It is shown by Chargaff that A=T=G=C is not true, rather A=T and G=C. This is known as Chargaff's rule
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Hershey and Chase use viruses in multiple mother-daughter bacteria to prove that they have similar or same genetic makeups.
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Watson and Crick's lab team uses new technology to observe DNA reproducing
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Genetech completes the first ever genetic engeneering
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A tomato with longer shelf life is made.
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Dolly the sheep becomes the first mammal ever cloned
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