BIOL308 Lecture 2: Lecture 2
11 Jun 2017
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How do these 3 functions relate to its physical structure & how are dna sequences related to its info content. 1868 the swiss biologist, friedrich miescher, dna from salmon sperm. 1944 oswald avery, colin macleod, and maclyn mccarty showed that pathogen characteristic is transferred from pathogenic strains of the bacterium pneumococcus to nonpathogenic strains through transfer of dna. 1947 erwin chargaff reported that the quantities of a&t or g&c in dna were very close to the same value. 1952 alfred hershey and martha chase showed t2 bacteriophage injects only dna into cells and this is sufficient to make more t2 bacteriophage. 1953 james watson and francis crick proposed the model of the double helix of dna. 1958 matthew meselson and franklin stahl demonstrated that dna replication occurred by a semi-conservative mechanism in which a parental duplex is replicated into two identical daughter duplexes.
