
Crick and Watson's DNA Molecular Model
1953
1953
1953
1948-1953
1920-1950
1940
1907
1878-1879
1879
1903
1934
1915-1918
1955
1918-1920
1919
1957
circa 1897
1920-1925
1917
1870
1901-1930
1936
circa 1956-1959
1895-1904
1920-1950
1945-1955
1935
1880-1920
1890-1910
1947-1958
1880-1920
circa 1871
1955
1898
1918
1903
1955
1901-1910
1890-1935
1936
1901-1930
1945
1880-1958
1949
1875
1945-1948
1880
1900-1920
1879
1775-1799 (original); 1900-1907 (model)
1871