
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1948-1953
1969
1964-1970
1955
1957
1960
circa 1956-1959
1960-1969
1974
1964
1947-1958
1955
1955
1949
1976
1960
1967
1949
1951
1950
1978
1948-1953
1963
1950
1960
1970-1971
1976
1947
1950-1969
1961
1948-1970
1975
circa 1955
circa 1972
1950-1960
1950-1960
1958
1962
1956
1975
1955-1975
1950-1960
1950-1960
1950-1960
1955
1947
1955