
Crick and Watson's DNA Molecular Model
1953
1953
1953
1969-1970
1969
1960
1934
1976-1979
1988
1992-1994
circa 1956-1959
1955
1948-1953
1963
1951
1949
1974
1995
1984-1986
1996
1965
1985
1975
1931
1951
1942
1956
circa 1972
1960-1970
1964
1980-1990
1935-1965
1946
1959
1976-1982
1948-1953
1955
1996
1979
1969
1957
1938-1940
1945
1948-1950
1839 (original); circa 1988 (replica)
1936
1949
1935
1960
1970-1971
1960-1970