
Crick and Watson's DNA Molecular Model
1953
1953
1919
1949
1917
1915-1918
1934
1948-1953
1918-1920
1920-1950
1930-1939
1901-1930
1935
circa 1919
1949
1945-1955
1925-1935
circa 1910
1935
1903
1957
1950-1952
1918
1955
1920-1950
1939-1955
1920-1925
1945
1917
1942
1903
1920-1950
1951
1905
1920-1930
1920-1950
1801-1840 (original); 1901 (model)
1926-1932
1938
c.1912
1940
1938
1926-1936
1926
1953
1945
1926
1948
1946
1955
1955