
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969
1955
1957
1960
circa 1956-1959
1960-1969
1964
1955
1955
1965
1960
1967
1951
1950
1830 (original); 1967 (model)
1963
1950
1960
1976
1950-1969
1961
circa 1955
1950-1960
1950-1960
1958
1962
1956
1950-1960
1950-1960
1950-1960
1955
1955
1954-1968
1965
1955-1965
2000-100 BCE
1961
1956
1968
1955
1955-1965
1950-1953
1969
1959
circa 1953
1957
1953-1958
1951