bio 214 history

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Author:
lacythecoolest
ID:
273541
Filename:
bio 214 history
Updated:
2014-05-06 22:58:07
Tags:
cell bio
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Description:
DNA history
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  1. mendel
    • law of inheritance
    • peas
    • assortment/segregation/dominance
  2. miescher
    • extract DNA
    • white blood cells
    • found DNA
  3. extracted DNA from white blood cells
    • mischer
    • 1869
  4. boveri/sutton
    • sea urchin eggs
    • chromosomes carry genetic information
    • parental gametes
  5. discovered gametes
    chromosomes from each parent
    • boveri/sutton
    • 1902
  6. griffith
    • heritable change
    • pneumonia in mice
    • 1 strand changed the inactive strand
  7. mice with pneumoniae
    changed inactive strand
    Griffith 1928
  8. beadle/tatum
    • 1 gene-1 enzyme/1 polypeptide
    • bread mold(neurospora)
    • mutated genes,
    • found genes produce enzymes
  9. mutated bread mold genes
    concluded amino acids made growth happen
    • beadle/tatum
    • 1941
  10. aver/macleod/mccarthy
    • dna vs rna vs protease
    • t2r cells
    • added aser's
    • DNAase didn't grow
    • transforming principle
  11. transforming principle
    DNAase=no growth
    Avery/macleod/mccarthy
  12. hersey/chase
    • DNA is the changing factor
    • e coli/t2
    • radioactive material
    • DNA in e coli
  13. DNA is the changing factor
    radioactive material
    hersey/chase
  14. chargaff
    • equal nucleotides on each side
    • breaking down different species DNA
  15. equal nucleotides
    diff species DNA
    chargaff
  16. franklin
    • xray data
    • helix shape
  17. xray data
    helix shape
    franklin
  18. Watson/crick
    • base pairing rules
    • figured out DNA structure
  19. figured out DNA structure
    base pairing rules
    Watson/crick
  20. meselson/stahl
    • dna structure confirmed
    • sem v. dispersive v. conservative
    • bacteria w/N15 & 14
    • 1 gen=middle density
    • 2nd gen=more 14
  21. N14/15 density over generations
    semiconservative
    meselson & stahl

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