
Crick and Watson's DNA Molecular Model
1953
1953
1953
1942
1948-1953
1945
1918-1920
1935
1935
1920-1925
1934
1955
1919
1950-1952
1920-1940
1920-1950
1946-1950
1936
1949
1949
1945-1955
1920-1950
1920-1950
1948-1950
1923 - 2015
1948-1953
1920 - 2007
1945
1926
1948
1946
1955
1955
1943
1948
1957
1931
circa 1920
1927
1957
1953-1958
1940
1927
1938
1920
1947
1947
1932-1942
1924
1940
1938