
Crick and Watson's DNA Molecular Model
1953
1953
1885
1953
1871
1872
1948-1953
1920-1950
1940
1907
1878-1879
1879
1903
1934
1915-1918
circa 1832
1955
circa 1897
1920-1925
1917
1872
1860
1918-1920
1919
1942
1870
1901-1930
1936
1920-1950
1895-1904
1920-1950
1935
1945-1955
1853-1857
1829
1880-1920
1890-1910
1862
1880-1920
circa 1871
1955
1852
1955
1898
1918
1903
1949
1875
1955
1951-1953
1901-1910