Crick and Watson's DNA Molecular Model
1953
1953
1942
1955
1936
1956
1935
1946
1939
1958
1945-1955
1942
1959
1935
1952
1947
1955
circa 1932
1935
1937
1937
1938; (1838)
1957
1946-1950
1958
1937
1956
1958
1948
circa 1932
1938
1938
circa 1956
1980-1950
1937-1949
1937-1949
1946
1937-1949
1935-1936
1935-1945
1937-1949
1953
1936-1940
1937-1949
1937-1949
1945-1955
1931-1940
1939
1950
1945-1958
1950