
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1960
1976-1979
1988
circa 1956-1959
1955
1948-1953
1963
1951
1949
1974
1984-1986
1965
1985
1975
1951
1956
circa 1972
1960-1970
1964
1980-1990
1946
1959
1976-1982
1948-1953
1955
1979
1969
1957
1945
1948-1950
1839 (original); circa 1988 (replica)
1949
1960
1970-1971
1960-1970
1945-1955
1830 (original); 1967 (model)
1903 (original); 1982 (model)
1960
1980-1985
1970-1981
1990-96
circa 1956
1954-1968
1964
1990