
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1920-1950
1903
1907
1923
circa 1956-1959
1920-1950
1951
1949
1974
1900-1920
1901-1930
1965
1915-1925
1963
1956
1948-1953
1955-1975
1955
1976-1979
1934
1899-1919
1906-1915
1935-1965
1920-1960
1948-1950
1839 (original); circa 1988 (replica)
1936
1949
1935
circa 1900
1960
1970-1971
1960-1970
1905
1705-1737
1945-1955
1900-1910
1925-1935
1900-1910
1920-1950
c.1912
1915
1830 (original); 1967 (model)
1903 (original); 1982 (model)
1960
1897