
Crick and Watson's DNA Molecular Model
1953
1953
1885
1953
1969-1970
1871
1872
1948-1953
1969
1920-1950
1940
1907
1878-1879
1879
1935-1965
1920-1960
1964-1970
1903
1930-1960
1934
1915-1918
1955
circa 1897
1920-1925
1917
1872
1918-1920
1919
1957
1942
1960
1870
1901-1930
1936
circa 1956-1959
1920-1950
1895-1904
1920-1950
1935
1945-1955
1960-1969
1974
1964
1880-1920
1890-1910
1947-1958
1880-1920
circa 1871
1955
1955
1898