
Crick and Watson's DNA Molecular Model
1953
1953
1953
1949
1934
1948-1953
1935
1942
1950-1952
1945-1955
1952-3
1945
1830 (original); 1967 (model)
circa 1956
1951
1940
1957
1955
1928
1946-1950
1940
1940-1950
1948-1950
1945
1953
1935
1955
1939-1955
1927
1955
1954
1958
1953
1936
1956
1946
1950-1953
1926
1956
1951-1953
1930-1940
circa 1956
1947
1943
1944
1938
1930-1950
1927
1948
1947
1936