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NBCHBScientists1112
scientists that worked on DNA
| Question | Answer |
|---|---|
| What did Watson and Crick do? | built a tin model of the structure of DNA |
| What were Watson and Crick's conclusion? | the two chains in DNA run in opposite directions and is antiparalell |
| Who concluded Dna contains the info. needed for its replication? | Arthur Kornberg |
| DNA have the same base composition as parental DNA can be synthesized in a test tube conatining three substances, said Kornberg. what were the substances? | DNA polymerase, Dna which seves as a template to guide incoming nucleotides, dATP, dCTP, dGTP, dTTP |
| Who concluded DNA was semi conservative? | Meselson and Stahl |
| Meselson and Stahl used____________ to grow in different testubes containg different isotopes of Nitrogen? | bacteria |
| What did Chargaf conclude? | (A=T) (G=C) (A+G)purines=(T+C) pyrimidines |
| Who injected mice with virulent and novirulents S and R strands and conclude "a chemical substance from one cell is capable of genetically transforming another cell? | frederick griffith |
| Hershey and Chase | DNA not protein enters bacterial cells and directs the assemble of new viruses |
| Dnase is the transforming principle in DNA | Avert, Macleod, and McCarthy |