
Crick and Watson's DNA Molecular Model
1953
1953
1953
1920-1950
1955
1963
1956
1934
1948-1953
1906-1915
1935-1965
1920-1960
1839 (original); circa 1988 (replica)
1940
1951
1923
1920-1950
1920-1950
1903
1907
1953-1958
1904
1938
1920
1947
1938
1948
1923-1948
1938
1910-1920
1969
1935
1950-1969
1938
1961
1940
1901
circa 1955
1928
circa 1910
1914-1920
1935
circa 1900
1914-1918
1962
1940
1936
1920-1929
1934
1910
1950