1Frederick Griffith
genotypes and phenotyopes can be changed (transformed)
2Macleod, Avery, McCarthy
determined that DNA was the genetic material
3Chase and Hershey
additional evidence that DNA was genetic material
4Chargaff
# of purines = # of pyrimidines
5Rosalind Franklin
took first photo of DNA's double-helix
6Watson and Crick
published that DNA was double-helix that runs anti-parallel
7Beadle & Tatum
proposed one-gene-one-polypeptide (untrue)
8Nirenberg and Matthaei
deduced codon sequences responsible for amino acids
9sydney brenner
discovered first STOP codon