
Crick and Watson's DNA Molecular Model
1953
1953
1945
1967
1967
1999
1987
1989
1987
1993
1993-1996
circa 2014
1960
1994
1988
1988
1920-1970
1979
1900-1930
1989
1989
2007
1983-1988
1962-1972
1989
1963-1969
1970-1975
1970-1975