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  Friedrich Mieschiner isolates DNA
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  Walter Sutton observed the version of meiosis
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  Genes are the units of heredity
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  George Beadle and Edward Tatum discovered that genes act with regulating chemical events
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  Sydney Brenner, Francios Jacob, and Matthew Meselon discovered mRNA
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  A frog protein was cloned
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  First genetic map of chromosomes based on 400 restrictions
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  Sequence the genomes of a bacteria
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  E. Coli bacteria lives in lower small intestines
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  Mouse genome compared to a human genome