
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1949
1935
1918
1901-1930
1903
1951
1920-1950
1907
1934
1920-1925
1953
1942
1948-1953
1899-1919
1918-1920
1919
1909-1910
1897
1935-1945
1937
1925-1935
1915-1925
1943
1934-1935
1920-1925
1901-1910
1935
1903
1915-1918
circa 1910
1935
1940
1901-1930
1920-1940
1889
circa 1897
1901
1917
1896
1951-1953
1953
1945
1920-1950
1921-1930
circa 1900
1910-1926
1940