
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1955
1956
1934
1948-1953
1920-1960
1839 (original); circa 1988 (replica)
1940
1951
1923
1920-1950
1920-1950
1953-1958
1938
1920
1947
1938
1948
1923-1948
1938
1935
1938
1940
circa 1955
1928
1935
1940
1936
1920-1929
1934
1950
1960
1922
1960
1960
1932
1955; 1830
1950
1935
1951
1939-1955
1955
1920-1940
1925-1928
1949
1954-1955
1940-1945
1927-1929