
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
1910-1920
1935
1938
1961
1940
circa 1955
1928
circa 1910
1914-1920
1935
1914-1918
1940
1936
1920-1929
1934
1910
1950
1960
1922
1960
1960
1932
1955; 1830
1950
1915-1917
1935
1951
1914