
Crick and Watson's DNA Molecular Model
1953
1953
1999
1945
1967
1967
1989
1987
1993
1993-1996
circa 2014
1994
1993
1948
1968
1996
1988-1995
1980-1989
1975-1990
1993
1995-2000
1989
1972-1979
1984
1991
1930-1940
1991
1989
1992
1989
1989
1989
1989
1989
1989
1989-1995
1989
1989
1989
1989
1989
1989
1989
1999
1999
1999
1980
1996
1996