
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1948-1953
1969
1920-1950
1940
1907
1935-1965
1920-1960
1964-1970
1903
1930-1960
1934
1915-1918
1976-1979
1955
1920-1925
1917
1918-1920
1919
1957
1942
1960
1901-1930
1936
circa 1956-1959
1920-1950
1920-1950
1935
1945-1955
1960-1969
1974
1964
1947-1958
1976
1973-1983
1955
1979
1955
1918
1903
1949
1955
1951-1953
(1962); 1982
1901-1910
1920
1920-1950
1936