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Bio_Wdmn_discoverDNA

Historical figures discover DNA is the material of heredity

QuestionAnswer
Griffith found a "transforming principle" that could change harmless R pneumonia bacteria into killer S
Hershey and Chase worked with bacteriophages and radioactive markers, to prove that genetic material was the DNA core, NOT the protein
Avery (and colleagues) used test tubes in a process of elimination to prove that DNA, not protein or RNA, was Griffith's "transforming principle"
R.Franklin and Wilkins used xray diffraction photography to peek at the structure of DNA- their photos prove essential to the development of helix structure
Chargaff took chemical measurements that indicate A balances with T and that C balances G in various species DNA samples. His rules are called "base-pairing"
Watson and Crick brought together many scientists' work to develop today's working model of DNA structure: the double helix with bases paired inside.
Created by: biologewoodman
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