Crick and Watson's DNA Molecular Model
1953
1953
1955
1981
1978
1967
1962
1963
1955-1980
1956
1950-1960
1959-1964
1983
1985-1989
1975
1958
1974
1970
1961
1984
1970-1990
1959
1986
1990
1967
1964
1975
1952
1983
1980-1989
1955
1991
1968
about 1990
1960-1970
1974
1957
1957 (original); 1961 (model)
1987
1990
1960s
1960s
1958
about 1990
about 1990
1961
1961
1961
1959-1962
1973
1956